19495307620

素因数分解:

$2^2\times 5^1\times {\mathrm{974765381}}^1$

素因数の和:974765390

約数の個数: 12

約数和(自身を含む): 40940146044

約数和(自身を除く): 21444838424

約数列:

[1, 2, 4, 5, 10, 20, 974765381, 1949530762, 3899061524, 4873826905, 9747653810, 19495307620]

約数ペア:

[(1, 19495307620), (2, 9747653810), (4, 4873826905), (5, 3899061524), (10, 1949530762), (20, 974765381)]