66788020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{256877}}^1$

素因数の和:256899

約数の個数: 24

約数和(自身を含む): 151044264

約数和(自身を除く): 84256244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 256877, 513754, 1027508, 1284385, 2568770, 3339401, 5137540, 6678802, 13357604, 16697005, 33394010, 66788020]

約数ペア:

[(1, 66788020), (2, 33394010), (4, 16697005), (5, 13357604), (10, 6678802), (13, 5137540), (20, 3339401), (26, 2568770), (52, 1284385), (65, 1027508), (130, 513754), (260, 256877)]