20198097620

素因数分解:

$2^2\times 5^1\times {\mathrm{1009904881}}^1$

素因数の和:1009904890

約数の個数: 12

約数和(自身を含む): 42416005044

約数和(自身を除く): 22217907424

約数列:

[1, 2, 4, 5, 10, 20, 1009904881, 2019809762, 4039619524, 5049524405, 10099048810, 20198097620]

約数ペア:

[(1, 20198097620), (2, 10099048810), (4, 5049524405), (5, 4039619524), (10, 2019809762), (20, 1009904881)]