21069404

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{14591}}^1$

素因数の和:14633

約数の個数: 18

約数和(自身を含む): 38916864

約数和(自身を除く): 17847460

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 14591, 29182, 58364, 277229, 554458, 1108916, 5267351, 10534702, 21069404]

約数ペア:

[(1, 21069404), (2, 10534702), (4, 5267351), (19, 1108916), (38, 554458), (76, 277229), (361, 58364), (722, 29182), (1444, 14591)]