18804538420

素因数分解:

$2^2\times 5^1\times {\mathrm{940226921}}^1$

素因数の和:940226930

約数の個数: 12

約数和(自身を含む): 39489530724

約数和(自身を除く): 20684992304

約数列:

[1, 2, 4, 5, 10, 20, 940226921, 1880453842, 3760907684, 4701134605, 9402269210, 18804538420]

約数ペア:

[(1, 18804538420), (2, 9402269210), (4, 4701134605), (5, 3760907684), (10, 1880453842), (20, 940226921)]