15945820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{72481}}^1$

素因数の和:72501

約数の個数: 24

約数和(自身を含む): 36530928

約数和(自身を除く): 20585108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 72481, 144962, 289924, 362405, 724810, 797291, 1449620, 1594582, 3189164, 3986455, 7972910, 15945820]

約数ペア:

[(1, 15945820), (2, 7972910), (4, 3986455), (5, 3189164), (10, 1594582), (11, 1449620), (20, 797291), (22, 724810), (44, 362405), (55, 289924), (110, 144962), (220, 72481)]