20715850

素因数分解:

$2^1\times 5^2\times {\mathrm{409}}^1\times {\mathrm{1013}}^1$

素因数の和:1434

約数の個数: 24

約数和(自身を含む): 38663820

約数和(自身を除く): 17947970

約数列:

[1, 2, 5, 10, 25, 50, 409, 818, 1013, 2026, 2045, 4090, 5065, 10130, 10225, 20450, 25325, 50650, 414317, 828634, 2071585, 4143170, 10357925, 20715850]

約数ペア:

[(1, 20715850), (2, 10357925), (5, 4143170), (10, 2071585), (25, 828634), (50, 414317), (409, 50650), (818, 25325), (1013, 20450), (2026, 10225), (2045, 10130), (4090, 5065)]