20997106

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:394

約数の個数: 32

約数和(自身を含む): 35481600

約数和(自身を除く): 14484494

約数列:

[1, 2, 13, 26, 31, 62, 109, 218, 239, 403, 478, 806, 1417, 2834, 3107, 3379, 6214, 6758, 7409, 14818, 26051, 43927, 52102, 87854, 96317, 192634, 338663, 677326, 807581, 1615162, 10498553, 20997106]

約数ペア:

[(1, 20997106), (2, 10498553), (13, 1615162), (26, 807581), (31, 677326), (62, 338663), (109, 192634), (218, 96317), (239, 87854), (403, 52102), (478, 43927), (806, 26051), (1417, 14818), (2834, 7409), (3107, 6758), (3379, 6214)]