128964639

素因数分解:

$3^1\times {\mathrm{41}}^2\times {\mathrm{107}}^1\times {\mathrm{239}}^1$

素因数の和:431

約数の個数: 24

約数和(自身を含む): 178640640

約数和(自身を除く): 49676001

約数列:

[1, 3, 41, 107, 123, 239, 321, 717, 1681, 4387, 5043, 9799, 13161, 25573, 29397, 76719, 179867, 401759, 539601, 1048493, 1205277, 3145479, 42988213, 128964639]

約数ペア:

[(1, 128964639), (3, 42988213), (41, 3145479), (107, 1205277), (123, 1048493), (239, 539601), (321, 401759), (717, 179867), (1681, 76719), (4387, 29397), (5043, 25573), (9799, 13161)]