20409851

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{3631}}^1$

素因数の和:3722

約数の個数: 16

約数和(自身を含む): 25801728

約数和(自身を除く): 5391877

約数列:

[1, 7, 11, 73, 77, 511, 803, 3631, 5621, 25417, 39941, 265063, 279587, 1855441, 2915693, 20409851]

約数ペア:

[(1, 20409851), (7, 2915693), (11, 1855441), (73, 279587), (77, 265063), (511, 39941), (803, 25417), (3631, 5621)]