21195500

素因数分解:

$2^2\times 5^3\times {\mathrm{42391}}^1$

素因数の和:42410

約数の個数: 24

約数和(自身を含む): 46292064

約数和(自身を除く): 25096564

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 42391, 84782, 169564, 211955, 423910, 847820, 1059775, 2119550, 4239100, 5298875, 10597750, 21195500]

約数ペア:

[(1, 21195500), (2, 10597750), (4, 5298875), (5, 4239100), (10, 2119550), (20, 1059775), (25, 847820), (50, 423910), (100, 211955), (125, 169564), (250, 84782), (500, 42391)]