28257309

素因数分解:

$3^3\times {\mathrm{107}}^1\times {\mathrm{9781}}^1$

素因数の和:9897

約数の個数: 16

約数和(自身を含む): 42258240

約数和(自身を除く): 14000931

約数列:

[1, 3, 9, 27, 107, 321, 963, 2889, 9781, 29343, 88029, 264087, 1046567, 3139701, 9419103, 28257309]

約数ペア:

[(1, 28257309), (3, 9419103), (9, 3139701), (27, 1046567), (107, 264087), (321, 88029), (963, 29343), (2889, 9781)]