31340080

素因数分解:

$2^4\times 5^1\times {\mathrm{391751}}^1$

素因数の和:391764

約数の個数: 20

約数和(自身を含む): 72865872

約数和(自身を除く): 41525792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 391751, 783502, 1567004, 1958755, 3134008, 3917510, 6268016, 7835020, 15670040, 31340080]

約数ペア:

[(1, 31340080), (2, 15670040), (4, 7835020), (5, 6268016), (8, 3917510), (10, 3134008), (16, 1958755), (20, 1567004), (40, 783502), (80, 391751)]