256465209

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2083}}^1$

素因数の和:2158

約数の個数: 64

約数和(自身を含む): 470550528

約数和(自身を除く): 214085319

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 41, 77, 91, 123, 143, 231, 273, 287, 429, 451, 533, 861, 1001, 1353, 1599, 2083, 3003, 3157, 3731, 5863, 6249, 9471, 11193, 14581, 17589, 22913, 27079, 41041, 43743, 68739, 81237, 85403, 123123, 160391, 189553, 256209, 297869, 481173, 568659, 597821, 893607, 939433, 1110239, 1793463, 2085083, 2818299, 3330717, 6255249, 6576031, 7771673, 12212629, 19728093, 23315019, 36637887, 85488403, 256465209]

約数ペア:

[(1, 256465209), (3, 85488403), (7, 36637887), (11, 23315019), (13, 19728093), (21, 12212629), (33, 7771673), (39, 6576031), (41, 6255249), (77, 3330717), (91, 2818299), (123, 2085083), (143, 1793463), (231, 1110239), (273, 939433), (287, 893607), (429, 597821), (451, 568659), (533, 481173), (861, 297869), (1001, 256209), (1353, 189553), (1599, 160391), (2083, 123123), (3003, 85403), (3157, 81237), (3731, 68739), (5863, 43743), (6249, 41041), (9471, 27079), (11193, 22913), (14581, 17589)]