18560020

素因数分解:

$2^2\times 5^1\times {\mathrm{928001}}^1$

素因数の和:928010

約数の個数: 12

約数和(自身を含む): 38976084

約数和(自身を除く): 20416064

約数列:

[1, 2, 4, 5, 10, 20, 928001, 1856002, 3712004, 4640005, 9280010, 18560020]

約数ペア:

[(1, 18560020), (2, 9280010), (4, 4640005), (5, 3712004), (10, 1856002), (20, 928001)]