20518029

素因数分解:

$3^4\times 7^1\times {\mathrm{36187}}^1$

素因数の和:36206

約数の個数: 20

約数和(自身を含む): 35029984

約数和(自身を除く): 14511955

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 36187, 108561, 253309, 325683, 759927, 977049, 2279781, 2931147, 6839343, 20518029]

約数ペア:

[(1, 20518029), (3, 6839343), (7, 2931147), (9, 2279781), (21, 977049), (27, 759927), (63, 325683), (81, 253309), (189, 108561), (567, 36187)]