21064887

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{45893}}^1$

素因数の和:45919

約数の個数: 16

約数和(自身を含む): 33043680

約数和(自身を除く): 11978793

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 45893, 137679, 413037, 780181, 1239111, 2340543, 7021629, 21064887]

約数ペア:

[(1, 21064887), (3, 7021629), (9, 2340543), (17, 1239111), (27, 780181), (51, 413037), (153, 137679), (459, 45893)]