20505050

素因数分解:

$2^1\times 5^2\times {\mathrm{397}}^1\times {\mathrm{1033}}^1$

素因数の和:1442

約数の個数: 24

約数和(自身を含む): 38272476

約数和(自身を除く): 17767426

約数列:

[1, 2, 5, 10, 25, 50, 397, 794, 1033, 1985, 2066, 3970, 5165, 9925, 10330, 19850, 25825, 51650, 410101, 820202, 2050505, 4101010, 10252525, 20505050]

約数ペア:

[(1, 20505050), (2, 10252525), (5, 4101010), (10, 2050505), (25, 820202), (50, 410101), (397, 51650), (794, 25825), (1033, 19850), (1985, 10330), (2066, 9925), (3970, 5165)]