20493175

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{163}}^1$

素因数の和:327

約数の個数: 24

約数和(自身を含む): 26355456

約数和(自身を除く): 5862281

約数列:

[1, 5, 25, 47, 107, 163, 235, 535, 815, 1175, 2675, 4075, 5029, 7661, 17441, 25145, 38305, 87205, 125725, 191525, 436025, 819727, 4098635, 20493175]

約数ペア:

[(1, 20493175), (5, 4098635), (25, 819727), (47, 436025), (107, 191525), (163, 125725), (235, 87205), (535, 38305), (815, 25145), (1175, 17441), (2675, 7661), (4075, 5029)]