20407640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{46381}}^1$

素因数の和:46403

約数の個数: 32

約数和(自身を含む): 50092560

約数和(自身を除く): 29684920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 46381, 92762, 185524, 231905, 371048, 463810, 510191, 927620, 1020382, 1855240, 2040764, 2550955, 4081528, 5101910, 10203820, 20407640]

約数ペア:

[(1, 20407640), (2, 10203820), (4, 5101910), (5, 4081528), (8, 2550955), (10, 2040764), (11, 1855240), (20, 1020382), (22, 927620), (40, 510191), (44, 463810), (55, 371048), (88, 231905), (110, 185524), (220, 92762), (440, 46381)]