81132020

素因数分解:

$2^2\times 5^1\times {\mathrm{4056601}}^1$

素因数の和:4056610

約数の個数: 12

約数和(自身を含む): 170377284

約数和(自身を除く): 89245264

約数列:

[1, 2, 4, 5, 10, 20, 4056601, 8113202, 16226404, 20283005, 40566010, 81132020]

約数ペア:

[(1, 81132020), (2, 40566010), (4, 20283005), (5, 16226404), (10, 8113202), (20, 4056601)]