21904918

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{331}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 39202560

約数和(自身を除く): 17297642

約数列:

[1, 2, 7, 14, 29, 58, 163, 203, 326, 331, 406, 662, 1141, 2282, 2317, 4634, 4727, 9454, 9599, 19198, 33089, 53953, 66178, 67193, 107906, 134386, 377671, 755342, 1564637, 3129274, 10952459, 21904918]

約数ペア:

[(1, 21904918), (2, 10952459), (7, 3129274), (14, 1564637), (29, 755342), (58, 377671), (163, 134386), (203, 107906), (326, 67193), (331, 66178), (406, 53953), (662, 33089), (1141, 19198), (2282, 9599), (2317, 9454), (4634, 4727)]