21556436

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{691}}^1\times {\mathrm{709}}^1$

素因数の和:1415

約数の個数: 24

約数和(自身を含む): 41270880

約数和(自身を除く): 19714444

約数列:

[1, 2, 4, 11, 22, 44, 691, 709, 1382, 1418, 2764, 2836, 7601, 7799, 15202, 15598, 30404, 31196, 489919, 979838, 1959676, 5389109, 10778218, 21556436]

約数ペア:

[(1, 21556436), (2, 10778218), (4, 5389109), (11, 1959676), (22, 979838), (44, 489919), (691, 31196), (709, 30404), (1382, 15598), (1418, 15202), (2764, 7799), (2836, 7601)]