19857357

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3947}}^1$

素因数の和:4009

約数の個数: 24

約数和(自身を含む): 31615584

約数和(自身を除く): 11758227

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 3947, 5031, 11841, 35523, 51311, 153933, 169721, 461799, 509163, 1527489, 2206373, 6619119, 19857357]

約数ペア:

[(1, 19857357), (3, 6619119), (9, 2206373), (13, 1527489), (39, 509163), (43, 461799), (117, 169721), (129, 153933), (387, 51311), (559, 35523), (1677, 11841), (3947, 5031)]