80871620

素因数分解:

$2^2\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{3061}}^1$

素因数の和:4391

約数の個数: 24

約数和(自身を含む): 170014488

約数和(自身を除く): 89142868

約数列:

[1, 2, 4, 5, 10, 20, 1321, 2642, 3061, 5284, 6122, 6605, 12244, 13210, 15305, 26420, 30610, 61220, 4043581, 8087162, 16174324, 20217905, 40435810, 80871620]

約数ペア:

[(1, 80871620), (2, 40435810), (4, 20217905), (5, 16174324), (10, 8087162), (20, 4043581), (1321, 61220), (2642, 30610), (3061, 26420), (5284, 15305), (6122, 13210), (6605, 12244)]