8880020

素因数分解:

$2^2\times 5^1\times {\mathrm{444001}}^1$

素因数の和:444010

約数の個数: 12

約数和(自身を含む): 18648084

約数和(自身を除く): 9768064

約数列:

[1, 2, 4, 5, 10, 20, 444001, 888002, 1776004, 2220005, 4440010, 8880020]

約数ペア:

[(1, 8880020), (2, 4440010), (4, 2220005), (5, 1776004), (10, 888002), (20, 444001)]