81196360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{289987}}^1$

素因数の和:290005

約数の個数: 32

約数和(自身を含む): 208791360

約数和(自身を除く): 127595000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 289987, 579974, 1159948, 1449935, 2029909, 2319896, 2899870, 4059818, 5799740, 8119636, 10149545, 11599480, 16239272, 20299090, 40598180, 81196360]

約数ペア:

[(1, 81196360), (2, 40598180), (4, 20299090), (5, 16239272), (7, 11599480), (8, 10149545), (10, 8119636), (14, 5799740), (20, 4059818), (28, 2899870), (35, 2319896), (40, 2029909), (56, 1449935), (70, 1159948), (140, 579974), (280, 289987)]