21778576

素因数分解:

$2^4\times {\mathrm{211}}^1\times {\mathrm{6451}}^1$

素因数の和:6670

約数の個数: 20

約数和(自身を含む): 42402544

約数和(自身を除く): 20623968

約数列:

[1, 2, 4, 8, 16, 211, 422, 844, 1688, 3376, 6451, 12902, 25804, 51608, 103216, 1361161, 2722322, 5444644, 10889288, 21778576]

約数ペア:

[(1, 21778576), (2, 10889288), (4, 5444644), (8, 2722322), (16, 1361161), (211, 103216), (422, 51608), (844, 25804), (1688, 12902), (3376, 6451)]