20615240

素因数分解:

$2^3\times 5^1\times {\mathrm{515381}}^1$

素因数の和:515392

約数の個数: 16

約数和(自身を含む): 46384380

約数和(自身を除く): 25769140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 515381, 1030762, 2061524, 2576905, 4123048, 5153810, 10307620, 20615240]

約数ペア:

[(1, 20615240), (2, 10307620), (4, 5153810), (5, 4123048), (8, 2576905), (10, 2061524), (20, 1030762), (40, 515381)]