72815620

素因数分解:

$2^2\times 5^1\times {\mathrm{3640781}}^1$

素因数の和:3640790

約数の個数: 12

約数和(自身を含む): 152912844

約数和(自身を除く): 80097224

約数列:

[1, 2, 4, 5, 10, 20, 3640781, 7281562, 14563124, 18203905, 36407810, 72815620]

約数ペア:

[(1, 72815620), (2, 36407810), (4, 18203905), (5, 14563124), (10, 7281562), (20, 3640781)]