28205739

素因数分解:

$3^9\times {\mathrm{1433}}^1$

素因数の和:1460

約数の個数: 20

約数和(自身を含む): 42337416

約数和(自身を除く): 14131677

約数列:

[1, 3, 9, 27, 81, 243, 729, 1433, 2187, 4299, 6561, 12897, 19683, 38691, 116073, 348219, 1044657, 3133971, 9401913, 28205739]

約数ペア:

[(1, 28205739), (3, 9401913), (9, 3133971), (27, 1044657), (81, 348219), (243, 116073), (729, 38691), (1433, 19683), (2187, 12897), (4299, 6561)]