20161218021

素因数分解:

$3^1\times 7^2\times {\mathrm{137151143}}^1$

素因数の和:137151160

約数の個数: 12

約数和(自身を含む): 31270460832

約数和(自身を除く): 11109242811

約数列:

[1, 3, 7, 21, 49, 147, 137151143, 411453429, 960058001, 2880174003, 6720406007, 20161218021]

約数ペア:

[(1, 20161218021), (3, 6720406007), (7, 2880174003), (21, 960058001), (49, 411453429), (147, 137151143)]