201815620

素因数分解:

$2^2\times 5^1\times {\mathrm{10090781}}^1$

素因数の和:10090790

約数の個数: 12

約数和(自身を含む): 423812844

約数和(自身を除く): 221997224

約数列:

[1, 2, 4, 5, 10, 20, 10090781, 20181562, 40363124, 50453905, 100907810, 201815620]

約数ペア:

[(1, 201815620), (2, 100907810), (4, 50453905), (5, 40363124), (10, 20181562), (20, 10090781)]