20808675856

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9356419}}^1$

素因数の和:9356566

約数の個数: 20

約数和(自身を含む): 40606862800

約数和(自身を除く): 19798186944

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9356419, 18712838, 37425676, 74851352, 149702704, 1300542241, 2601084482, 5202168964, 10404337928, 20808675856]

約数ペア:

[(1, 20808675856), (2, 10404337928), (4, 5202168964), (8, 2601084482), (16, 1300542241), (139, 149702704), (278, 74851352), (556, 37425676), (1112, 18712838), (2224, 9356419)]