31260080

素因数分解:

$2^4\times 5^1\times {\mathrm{390751}}^1$

素因数の和:390764

約数の個数: 20

約数和(自身を含む): 72679872

約数和(自身を除く): 41419792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390751, 781502, 1563004, 1953755, 3126008, 3907510, 6252016, 7815020, 15630040, 31260080]

約数ペア:

[(1, 31260080), (2, 15630040), (4, 7815020), (5, 6252016), (8, 3907510), (10, 3126008), (16, 1953755), (20, 1563004), (40, 781502), (80, 390751)]