64992080

素因数分解:

$2^4\times 5^1\times {\mathrm{812401}}^1$

素因数の和:812414

約数の個数: 20

約数和(自身を含む): 151106772

約数和(自身を除く): 86114692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 812401, 1624802, 3249604, 4062005, 6499208, 8124010, 12998416, 16248020, 32496040, 64992080]

約数ペア:

[(1, 64992080), (2, 32496040), (4, 16248020), (5, 12998416), (8, 8124010), (10, 6499208), (16, 4062005), (20, 3249604), (40, 1624802), (80, 812401)]