20565148040

素因数分解:

$2^3\times 5^1\times {\mathrm{514128701}}^1$

素因数の和:514128712

約数の個数: 16

約数和(自身を含む): 46271583180

約数和(自身を除く): 25706435140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 514128701, 1028257402, 2056514804, 2570643505, 4113029608, 5141287010, 10282574020, 20565148040]

約数ペア:

[(1, 20565148040), (2, 10282574020), (4, 5141287010), (5, 4113029608), (8, 2570643505), (10, 2056514804), (20, 1028257402), (40, 514128701)]