256781679

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{14071}}^1$

素因数の和:14171

約数の個数: 32

約数和(自身を含む): 432291840

約数和(自身を除く): 175510161

約数列:

[1, 3, 7, 11, 21, 33, 77, 79, 231, 237, 553, 869, 1659, 2607, 6083, 14071, 18249, 42213, 98497, 154781, 295491, 464343, 1083467, 1111609, 3250401, 3334827, 7781263, 12227699, 23343789, 36683097, 85593893, 256781679]

約数ペア:

[(1, 256781679), (3, 85593893), (7, 36683097), (11, 23343789), (21, 12227699), (33, 7781263), (77, 3334827), (79, 3250401), (231, 1111609), (237, 1083467), (553, 464343), (869, 295491), (1659, 154781), (2607, 98497), (6083, 42213), (14071, 18249)]