81221217

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{7481}}^1$

素因数の和:7549

約数の個数: 32

約数和(自身を含む): 137908224

約数和(自身を除く): 56687007

約数列:

[1, 3, 7, 11, 21, 33, 47, 77, 141, 231, 329, 517, 987, 1551, 3619, 7481, 10857, 22443, 52367, 82291, 157101, 246873, 351607, 576037, 1054821, 1728111, 2461249, 3867677, 7383747, 11603031, 27073739, 81221217]

約数ペア:

[(1, 81221217), (3, 27073739), (7, 11603031), (11, 7383747), (21, 3867677), (33, 2461249), (47, 1728111), (77, 1054821), (141, 576037), (231, 351607), (329, 246873), (517, 157101), (987, 82291), (1551, 52367), (3619, 22443), (7481, 10857)]