31988080

素因数分解:

$2^4\times 5^1\times {\mathrm{399851}}^1$

素因数の和:399864

約数の個数: 20

約数和(自身を含む): 74372472

約数和(自身を除く): 42384392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 399851, 799702, 1599404, 1999255, 3198808, 3998510, 6397616, 7997020, 15994040, 31988080]

約数ペア:

[(1, 31988080), (2, 15994040), (4, 7997020), (5, 6397616), (8, 3998510), (10, 3198808), (16, 1999255), (20, 1599404), (40, 799702), (80, 399851)]