20909907

素因数分解:

$3^8\times {\mathrm{3187}}^1$

素因数の和:3211

約数の個数: 18

約数和(自身を含む): 31373108

約数和(自身を除く): 10463201

約数列:

[1, 3, 9, 27, 81, 243, 729, 2187, 3187, 6561, 9561, 28683, 86049, 258147, 774441, 2323323, 6969969, 20909907]

約数ペア:

[(1, 20909907), (3, 6969969), (9, 2323323), (27, 774441), (81, 258147), (243, 86049), (729, 28683), (2187, 9561), (3187, 6561)]