20921440516

素因数分解:

$2^2\times {\mathrm{1579}}^1\times {\mathrm{3312451}}^1$

素因数の和:3314034

約数の個数: 12

約数和(自身を含む): 36635719120

約数和(自身を除く): 15714278604

約数列:

[1, 2, 4, 1579, 3158, 6316, 3312451, 6624902, 13249804, 5230360129, 10460720258, 20921440516]

約数ペア:

[(1, 20921440516), (2, 10460720258), (4, 5230360129), (1579, 13249804), (3158, 6624902), (6316, 3312451)]