71580020

素因数分解:

$2^2\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{3187}}^1$

素因数の和:4319

約数の個数: 24

約数和(自身を含む): 150499104

約数和(自身を除く): 78919084

約数列:

[1, 2, 4, 5, 10, 20, 1123, 2246, 3187, 4492, 5615, 6374, 11230, 12748, 15935, 22460, 31870, 63740, 3579001, 7158002, 14316004, 17895005, 35790010, 71580020]

約数ペア:

[(1, 71580020), (2, 35790010), (4, 17895005), (5, 14316004), (10, 7158002), (20, 3579001), (1123, 63740), (2246, 31870), (3187, 22460), (4492, 15935), (5615, 12748), (6374, 11230)]