66540080

素因数分解:

$2^4\times 5^1\times {\mathrm{831751}}^1$

素因数の和:831764

約数の個数: 20

約数和(自身を含む): 154705872

約数和(自身を除く): 88165792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 831751, 1663502, 3327004, 4158755, 6654008, 8317510, 13308016, 16635020, 33270040, 66540080]

約数ペア:

[(1, 66540080), (2, 33270040), (4, 16635020), (5, 13308016), (8, 8317510), (10, 6654008), (16, 4158755), (20, 3327004), (40, 1663502), (80, 831751)]