20545820

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12377}}^1$

素因数の和:12469

約数の個数: 24

約数和(自身を含む): 43669584

約数和(自身を除く): 23123764

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12377, 24754, 49508, 61885, 123770, 247540, 1027291, 2054582, 4109164, 5136455, 10272910, 20545820]

約数ペア:

[(1, 20545820), (2, 10272910), (4, 5136455), (5, 4109164), (10, 2054582), (20, 1027291), (83, 247540), (166, 123770), (332, 61885), (415, 49508), (830, 24754), (1660, 12377)]