64220080

素因数分解:

$2^4\times 5^1\times {\mathrm{802751}}^1$

素因数の和:802764

約数の個数: 20

約数和(自身を含む): 149311872

約数和(自身を除く): 85091792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 802751, 1605502, 3211004, 4013755, 6422008, 8027510, 12844016, 16055020, 32110040, 64220080]

約数ペア:

[(1, 64220080), (2, 32110040), (4, 16055020), (5, 12844016), (8, 8027510), (10, 6422008), (16, 4013755), (20, 3211004), (40, 1605502), (80, 802751)]