10080020

素因数分解:

$2^2\times 5^1\times {\mathrm{504001}}^1$

素因数の和:504010

約数の個数: 12

約数和(自身を含む): 21168084

約数和(自身を除く): 11088064

約数列:

[1, 2, 4, 5, 10, 20, 504001, 1008002, 2016004, 2520005, 5040010, 10080020]

約数ペア:

[(1, 10080020), (2, 5040010), (4, 2520005), (5, 2016004), (10, 1008002), (20, 504001)]