208020080

素因数分解:

$2^4\times 5^1\times {\mathrm{2600251}}^1$

素因数の和:2600264

約数の個数: 20

約数和(自身を含む): 483646872

約数和(自身を除く): 275626792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2600251, 5200502, 10401004, 13001255, 20802008, 26002510, 41604016, 52005020, 104010040, 208020080]

約数ペア:

[(1, 208020080), (2, 104010040), (4, 52005020), (5, 41604016), (8, 26002510), (10, 20802008), (16, 13001255), (20, 10401004), (40, 5200502), (80, 2600251)]