4080960020

素因数分解:

$2^2\times 5^1\times {\mathrm{204048001}}^1$

素因数の和:204048010

約数の個数: 12

約数和(自身を含む): 8570016084

約数和(自身を除く): 4489056064

約数列:

[1, 2, 4, 5, 10, 20, 204048001, 408096002, 816192004, 1020240005, 2040480010, 4080960020]

約数ペア:

[(1, 4080960020), (2, 2040480010), (4, 1020240005), (5, 816192004), (10, 408096002), (20, 204048001)]