hyperperfect number
hyperperfect number · hyperperfect numbers
Any natural number n for which, for some positive integer k, n = 1 + k - n - 1), where…Any natural number n for which, for some positive integer k, n = 1 + k(σ(n) - n - 1), where σ(n) is the sum of the positive divisors of n.
Значення
значень: 1Any natural number n for which, for some positive integer k, n = 1 + k(σ(n) - n - 1), where σ(n) is the sum of the positive divisors of n.
1966, American Mathematical Society Translations, page 258, […] the asymptotic density of all hyperperfect numbers, that is, numbers m for which m | σ(m), is equal to zero.
Походження
From hyper- + perfect number.From hyper- + perfect number.
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Форми
множина: hyperperfect numbers| Однина | hyperperfect number |
|---|---|
| Множина | hyperperfect numbers |
правильне
Спільнокореневі
пов’язаних слів: 1Пов’язаніperfect number