20697147

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17827}}^1$

素因数の和:17879

約数の個数: 16

約数和(自身を含む): 31377280

約数和(自身を除く): 10680133

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17827, 53481, 160443, 481329, 766561, 2299683, 6899049, 20697147]

約数ペア:

[(1, 20697147), (3, 6899049), (9, 2299683), (27, 766561), (43, 481329), (129, 160443), (387, 53481), (1161, 17827)]