3997357

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:173

約数の個数: 24

約数和(自身を含む): 5153280

約数和(自身を除く): 1155923

約数列:

[1, 7, 13, 31, 91, 109, 169, 217, 403, 763, 1183, 1417, 2821, 3379, 5239, 9919, 18421, 23653, 36673, 43927, 128947, 307489, 571051, 3997357]

約数ペア:

[(1, 3997357), (7, 571051), (13, 307489), (31, 128947), (91, 43927), (109, 36673), (169, 23653), (217, 18421), (403, 9919), (763, 5239), (1183, 3379), (1417, 2821)]