21399335

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{2221}}^1$

素因数の和:2314

約数の個数: 16

約数和(自身を含む): 26877312

約数和(自身を除く): 5477977

約数列:

[1, 5, 41, 47, 205, 235, 1927, 2221, 9635, 11105, 91061, 104387, 455305, 521935, 4279867, 21399335]

約数ペア:

[(1, 21399335), (5, 4279867), (41, 521935), (47, 455305), (205, 104387), (235, 91061), (1927, 11105), (2221, 9635)]