20581477

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{677}}^1$

素因数の和:828

約数の個数: 16

約数和(自身を含む): 24342912

約数和(自身を除く): 3761435

約数列:

[1, 7, 43, 101, 301, 677, 707, 4343, 4739, 29111, 30401, 68377, 203777, 478639, 2940211, 20581477]

約数ペア:

[(1, 20581477), (7, 2940211), (43, 478639), (101, 203777), (301, 68377), (677, 30401), (707, 29111), (4343, 4739)]