21902111

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4663}}^1$

素因数の和:4742

約数の個数: 16

約数和(自身を含む): 27760128

約数和(自身を除く): 5858017

約数列:

[1, 7, 11, 61, 77, 427, 671, 4663, 4697, 32641, 51293, 284443, 359051, 1991101, 3128873, 21902111]

約数ペア:

[(1, 21902111), (7, 3128873), (11, 1991101), (61, 359051), (77, 284443), (427, 51293), (671, 32641), (4663, 4697)]