20643986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{15383}}^1$

素因数の和:15457

約数の個数: 16

約数和(自身を含む): 34337088

約数和(自身を除く): 13693102

約数列:

[1, 2, 11, 22, 61, 122, 671, 1342, 15383, 30766, 169213, 338426, 938363, 1876726, 10321993, 20643986]

約数ペア:

[(1, 20643986), (2, 10321993), (11, 1876726), (22, 938363), (61, 338426), (122, 169213), (671, 30766), (1342, 15383)]