21715519

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{4651}}^1$

素因数の和:4710

約数の個数: 16

約数和(自身を含む): 26795520

約数和(自身を除く): 5080001

約数列:

[1, 7, 23, 29, 161, 203, 667, 4651, 4669, 32557, 106973, 134879, 748811, 944153, 3102217, 21715519]

約数ペア:

[(1, 21715519), (7, 3102217), (23, 944153), (29, 748811), (161, 134879), (203, 106973), (667, 32557), (4651, 4669)]