21091982

素因数分解:

$2^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1\times {\mathrm{331}}^1$

素因数の和:695

約数の個数: 16

約数和(自身を含む): 32095104

約数和(自身を除く): 11003122

約数列:

[1, 2, 151, 211, 302, 331, 422, 662, 31861, 49981, 63722, 69841, 99962, 139682, 10545991, 21091982]

約数ペア:

[(1, 21091982), (2, 10545991), (151, 139682), (211, 99962), (302, 69841), (331, 63722), (422, 49981), (662, 31861)]