28561221

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{81371}}^1$

素因数の和:81393

約数の個数: 16

約数和(自身を含む): 45568320

約数和(自身を除く): 17007099

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 81371, 244113, 732339, 1057823, 2197017, 3173469, 9520407, 28561221]

約数ペア:

[(1, 28561221), (3, 9520407), (9, 3173469), (13, 2197017), (27, 1057823), (39, 732339), (117, 244113), (351, 81371)]