20678614

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21859}}^1$

素因数の和:21915

約数の個数: 16

約数和(自身を含む): 34626240

約数和(自身を除く): 13947626

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21859, 43718, 240449, 480898, 939937, 1879874, 10339307, 20678614]

約数ペア:

[(1, 20678614), (2, 10339307), (11, 1879874), (22, 939937), (43, 480898), (86, 240449), (473, 43718), (946, 21859)]