28219257

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{25913}}^1$

素因数の和:25941

約数の個数: 18

約数和(自身を含む): 44805306

約数和(自身を除く): 16586049

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 25913, 77739, 233217, 285043, 855129, 2565387, 3135473, 9406419, 28219257]

約数ペア:

[(1, 28219257), (3, 9406419), (9, 3135473), (11, 2565387), (33, 855129), (99, 285043), (121, 233217), (363, 77739), (1089, 25913)]