681444080

素因数分解:

$2^4\times 5^1\times {\mathrm{8518051}}^1$

素因数の和:8518064

約数の個数: 20

約数和(自身を含む): 1584357672

約数和(自身を除く): 902913592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8518051, 17036102, 34072204, 42590255, 68144408, 85180510, 136288816, 170361020, 340722040, 681444080]

約数ペア:

[(1, 681444080), (2, 340722040), (4, 170361020), (5, 136288816), (8, 85180510), (10, 68144408), (16, 42590255), (20, 34072204), (40, 17036102), (80, 8518051)]