20215723108

素因数分解:

$2^2\times 7^1\times {\mathrm{721990111}}^1$

素因数の和:721990122

約数の個数: 12

約数和(自身を含む): 40431446272

約数和(自身を除く): 20215723164

約数列:

[1, 2, 4, 7, 14, 28, 721990111, 1443980222, 2887960444, 5053930777, 10107861554, 20215723108]

約数ペア:

[(1, 20215723108), (2, 10107861554), (4, 5053930777), (7, 2887960444), (14, 1443980222), (28, 721990111)]