64380080

素因数分解:

$2^4\times 5^1\times {\mathrm{804751}}^1$

素因数の和:804764

約数の個数: 20

約数和(自身を含む): 149683872

約数和(自身を除く): 85303792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 804751, 1609502, 3219004, 4023755, 6438008, 8047510, 12876016, 16095020, 32190040, 64380080]

約数ペア:

[(1, 64380080), (2, 32190040), (4, 16095020), (5, 12876016), (8, 8047510), (10, 6438008), (16, 4023755), (20, 3219004), (40, 1609502), (80, 804751)]