20818651

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:522

約数の個数: 16

約数和(自身を含む): 24380928

約数和(自身を除く): 3562277

約数列:

[1, 7, 73, 131, 311, 511, 917, 2177, 9563, 22703, 40741, 66941, 158921, 285187, 2974093, 20818651]

約数ペア:

[(1, 20818651), (7, 2974093), (73, 285187), (131, 158921), (311, 66941), (511, 40741), (917, 22703), (2177, 9563)]