20375620

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2269}}^1$

素因数の和:2727

約数の個数: 24

約数和(自身を含む): 42903000

約数和(自身を除く): 22527380

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2245, 2269, 4490, 4538, 8980, 9076, 11345, 22690, 45380, 1018781, 2037562, 4075124, 5093905, 10187810, 20375620]

約数ペア:

[(1, 20375620), (2, 10187810), (4, 5093905), (5, 4075124), (10, 2037562), (20, 1018781), (449, 45380), (898, 22690), (1796, 11345), (2245, 9076), (2269, 8980), (4490, 4538)]