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1 hyperperfect number
Математика: гиперсовершенное число -
2 hyperperfect number
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3 гиперсовершенное число
Большой англо-русский и русско-английский словарь > гиперсовершенное число
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4 number
1) число || числовой2) номер || нумеровать3) код числа4) количество5) колонцифра6) численность || считать, подсчитывать, исчислять8) числительное•a great number of — множество, большое количество
a number of — (целый) ряд, некоторое количество
- absolutely pseudoprime number - connectivity number - deficient number - edge attachment number - edge covering number - edge sensitivity number - expected sample number - general recursively irrational number - geodesic crossing number - integer number - integral number - internal stability number - international customer number - mass exchange number - mixed-radix number - Mohs hardness number - number of principal cotype - number of space dimensions - octonary number - one-digit number - one-figure number - one's complement number - rectilinear crossing number - recursively real number - serial number - Shore hardness number - strictly positive number - vertex covering numberwinding number of a curve with respect to the point — порядок кривой относительно точки (число оборотов вектора, соединяющего данную точку с точкой кривой при обходе кривой)
См. также в других словарях:
Hyperperfect number — In mathematics, a k hyperperfect number (sometimes just called hyperperfect number ) is a natural number n for which the equality n = 1 + k ( σ ( n ) − n − 1) holds, where σ ( n ) is the divisor function (i.e., the sum of all positive divisors of … Wikipedia
Nombre Hyperparfait — En mathématiques, un nombre k hyperparfait (quelquefois simplement appelé nombre hyperparfait) est un nombre naturel n pour lequel l égalité reste valable, où est la fonction diviseur (c.a.d., la somme de tous les diviseurs positifs de n). Un… … Wikipédia en Français
Nombre hyperparfait — En mathématiques, un nombre k hyperparfait (quelquefois simplement appelé nombre hyperparfait) est un nombre naturel n pour lequel l égalité reste valable, où est la fonction diviseur (c.a.d., la somme de tous les diviseurs positifs de n). Un… … Wikipédia en Français
1909 (number) — Number|number = 1909 range = cardinal = one thousand nine hundred [and] nine ordinal = th ordinal text = one thousand nine hundred [and] ninth numeral = factorization = 23 cdot 83 prime = divisor = 1, 23, 83, 1909 unicode = greek prefix = latin… … Wikipedia
Prime number — Prime redirects here. For other uses, see Prime (disambiguation). A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is… … Wikipedia
Perfect number — In number theory, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself (also known as its aliquot sum). Equivalently, a perfect… … Wikipedia
Divisor — divisible redirects here. For divisibility of groups, see Divisible group. For the second operand of a division, see Division (mathematics). For divisors in algebraic geometry, see Divisor (algebraic geometry). For divisibility in the ring theory … Wikipedia
Integer sequence — In mathematics, an integer sequence is a sequence (i.e., an ordered list) of integers. An integer sequence may be specified explicitly by giving a formula for its nth term, or implicitly by giving a relationship between its terms. For example,… … Wikipedia
Composite number — A composite number is a positive integer which has a positive divisor other than one or itself. In other words a composite number is any positive integer greater than one that is not a prime number. So, if n > 0 is an integer and… … Wikipedia
Highly composite number — This article is about numbers having many divisors. For numbers factorized only to powers of 2, 3, 5 and 7 (also named 7 smooth numbers), see Smooth number. A highly composite number (HCN) is a positive integer with more divisors than any… … Wikipedia
Multiply perfect number — In mathematics, a multiply perfect number (also called multiperfect number or pluperfect number) is a generalization of a perfect number. For a given natural number k, a number n is called k perfect (or k fold perfect) if and only if the sum of… … Wikipedia