19493540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{88607}}^1$

素因数の和:88627

約数の個数: 24

約数和(自身を含む): 44658432

約数和(自身を除く): 25164892

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 88607, 177214, 354428, 443035, 886070, 974677, 1772140, 1949354, 3898708, 4873385, 9746770, 19493540]

約数ペア:

[(1, 19493540), (2, 9746770), (4, 4873385), (5, 3898708), (10, 1949354), (11, 1772140), (20, 974677), (22, 886070), (44, 443035), (55, 354428), (110, 177214), (220, 88607)]