20468080

素因数分解:

$2^4\times 5^1\times {\mathrm{255851}}^1$

素因数の和:255864

約数の個数: 20

約数和(自身を含む): 47588472

約数和(自身を除く): 27120392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255851, 511702, 1023404, 1279255, 2046808, 2558510, 4093616, 5117020, 10234040, 20468080]

約数ペア:

[(1, 20468080), (2, 10234040), (4, 5117020), (5, 4093616), (8, 2558510), (10, 2046808), (16, 1279255), (20, 1023404), (40, 511702), (80, 255851)]