2575391

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{311}}^1$

素因数の和:351

約数の個数: 18

約数和(自身を含む): 3254472

約数和(自身を除く): 679081

約数列:

[1, 7, 13, 49, 91, 169, 311, 637, 1183, 2177, 4043, 8281, 15239, 28301, 52559, 198107, 367913, 2575391]

約数ペア:

[(1, 2575391), (7, 367913), (13, 198107), (49, 52559), (91, 28301), (169, 15239), (311, 8281), (637, 4043), (1183, 2177)]