25880281

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:301

約数の個数: 24

約数和(自身を含む): 31420224

約数和(自身を除く): 5539943

約数列:

[1, 7, 43, 49, 71, 173, 301, 497, 1211, 2107, 3053, 3479, 7439, 8477, 12283, 21371, 52073, 85981, 149597, 364511, 528169, 601867, 3697183, 25880281]

約数ペア:

[(1, 25880281), (7, 3697183), (43, 601867), (49, 528169), (71, 364511), (173, 149597), (301, 85981), (497, 52073), (1211, 21371), (2107, 12283), (3053, 8477), (3479, 7439)]