15587721

素因数分解:

$3^5\times {\mathrm{23}}^1\times {\mathrm{2789}}^1$

素因数の和:2827

約数の個数: 24

約数和(自身を含む): 24373440

約数和(自身を除く): 8785719

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 243, 621, 1863, 2789, 5589, 8367, 25101, 64147, 75303, 192441, 225909, 577323, 677727, 1731969, 5195907, 15587721]

約数ペア:

[(1, 15587721), (3, 5195907), (9, 1731969), (23, 677727), (27, 577323), (69, 225909), (81, 192441), (207, 75303), (243, 64147), (621, 25101), (1863, 8367), (2789, 5589)]