18791020

素因数分解:

$2^2\times 5^1\times {\mathrm{939551}}^1$

素因数の和:939560

約数の個数: 12

約数和(自身を含む): 39461184

約数和(自身を除く): 20670164

約数列:

[1, 2, 4, 5, 10, 20, 939551, 1879102, 3758204, 4697755, 9395510, 18791020]

約数ペア:

[(1, 18791020), (2, 9395510), (4, 4697755), (5, 3758204), (10, 1879102), (20, 939551)]