85409780

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{28661}}^1$

素因数の和:28819

約数の個数: 24

約数和(自身を含む): 180570600

約数和(自身を除く): 95160820

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 28661, 57322, 114644, 143305, 286610, 573220, 4270489, 8540978, 17081956, 21352445, 42704890, 85409780]

約数ペア:

[(1, 85409780), (2, 42704890), (4, 21352445), (5, 17081956), (10, 8540978), (20, 4270489), (149, 573220), (298, 286610), (596, 143305), (745, 114644), (1490, 57322), (2980, 28661)]