389396259

素因数分解:

$3^2\times 7^1\times {\mathrm{397}}^1\times {\mathrm{15569}}^1$

素因数の和:15979

約数の個数: 24

約数和(自身を含む): 644473440

約数和(自身を除く): 255077181

約数列:

[1, 3, 7, 9, 21, 63, 397, 1191, 2779, 3573, 8337, 15569, 25011, 46707, 108983, 140121, 326949, 980847, 6180893, 18542679, 43266251, 55628037, 129798753, 389396259]

約数ペア:

[(1, 389396259), (3, 129798753), (7, 55628037), (9, 43266251), (21, 18542679), (63, 6180893), (397, 980847), (1191, 326949), (2779, 140121), (3573, 108983), (8337, 46707), (15569, 25011)]