394040

素因数分解:

$2^3\times 5^1\times {\mathrm{9851}}^1$

素因数の和:9862

約数の個数: 16

約数和(自身を含む): 886680

約数和(自身を除く): 492640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9851, 19702, 39404, 49255, 78808, 98510, 197020, 394040]

約数ペア:

[(1, 394040), (2, 197020), (4, 98510), (5, 78808), (8, 49255), (10, 39404), (20, 19702), (40, 9851)]