81640216

素因数分解:

$2^3\times 7^1\times {\mathrm{1457861}}^1$

素因数の和:1457874

約数の個数: 16

約数和(自身を含む): 174943440

約数和(自身を除く): 93303224

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 1457861, 2915722, 5831444, 10205027, 11662888, 20410054, 40820108, 81640216]

約数ペア:

[(1, 81640216), (2, 40820108), (4, 20410054), (7, 11662888), (8, 10205027), (14, 5831444), (28, 2915722), (56, 1457861)]