20728740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{345479}}^1$

素因数の和:345491

約数の個数: 24

約数和(自身を含む): 58040640

約数和(自身を除く): 37311900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 345479, 690958, 1036437, 1381916, 1727395, 2072874, 3454790, 4145748, 5182185, 6909580, 10364370, 20728740]

約数ペア:

[(1, 20728740), (2, 10364370), (3, 6909580), (4, 5182185), (5, 4145748), (6, 3454790), (10, 2072874), (12, 1727395), (15, 1381916), (20, 1036437), (30, 690958), (60, 345479)]