21379939

素因数分解:

$7^1\times {\mathrm{113}}^1\times {\mathrm{151}}^1\times {\mathrm{179}}^1$

素因数の和:450

約数の個数: 16

約数和(自身を含む): 24952320

約数和(自身を除く): 3572381

約数列:

[1, 7, 113, 151, 179, 791, 1057, 1253, 17063, 20227, 27029, 119441, 141589, 189203, 3054277, 21379939]

約数ペア:

[(1, 21379939), (7, 3054277), (113, 189203), (151, 141589), (179, 119441), (791, 27029), (1057, 20227), (1253, 17063)]