811440021

素因数分解:

$3^1\times 7^1\times {\mathrm{38640001}}^1$

素因数の和:38640011

約数の個数: 8

約数和(自身を含む): 1236480064

約数和(自身を除く): 425040043

約数列:

[1, 3, 7, 21, 38640001, 115920003, 270480007, 811440021]

約数ペア:

[(1, 811440021), (3, 270480007), (7, 115920003), (21, 38640001)]