257559981

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{285227}}^1$

素因数の和:285280

約数の個数: 16

約数和(自身を含む): 401601024

約数和(自身を除く): 144041043

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 285227, 855681, 1996589, 5989767, 12264761, 36794283, 85853327, 257559981]

約数ペア:

[(1, 257559981), (3, 85853327), (7, 36794283), (21, 12264761), (43, 5989767), (129, 1996589), (301, 855681), (903, 285227)]