65540080

素因数分解:

$2^4\times 5^1\times {\mathrm{819251}}^1$

素因数の和:819264

約数の個数: 20

約数和(自身を含む): 152380872

約数和(自身を除く): 86840792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 819251, 1638502, 3277004, 4096255, 6554008, 8192510, 13108016, 16385020, 32770040, 65540080]

約数ペア:

[(1, 65540080), (2, 32770040), (4, 16385020), (5, 13108016), (8, 8192510), (10, 6554008), (16, 4096255), (20, 3277004), (40, 1638502), (80, 819251)]