256225851

素因数分解:

$3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:481

約数の個数: 72

約数和(自身を含む): 454132224

約数和(自身を除く): 197906373

約数列:

[1, 3, 7, 9, 21, 37, 41, 49, 63, 111, 123, 147, 259, 287, 333, 369, 383, 441, 777, 861, 1149, 1517, 1813, 2009, 2331, 2583, 2681, 3447, 4551, 5439, 6027, 8043, 10619, 13653, 14171, 15703, 16317, 18081, 18767, 24129, 31857, 42513, 47109, 56301, 74333, 95571, 99197, 109921, 127539, 141327, 168903, 222999, 297591, 329763, 581011, 668997, 694379, 769447, 892773, 989289, 1743033, 2083137, 2308341, 4067077, 5229099, 6249411, 6925023, 12201231, 28469539, 36603693, 85408617, 256225851]

約数ペア:

[(1, 256225851), (3, 85408617), (7, 36603693), (9, 28469539), (21, 12201231), (37, 6925023), (41, 6249411), (49, 5229099), (63, 4067077), (111, 2308341), (123, 2083137), (147, 1743033), (259, 989289), (287, 892773), (333, 769447), (369, 694379), (383, 668997), (441, 581011), (777, 329763), (861, 297591), (1149, 222999), (1517, 168903), (1813, 141327), (2009, 127539), (2331, 109921), (2583, 99197), (2681, 95571), (3447, 74333), (4551, 56301), (5439, 47109), (6027, 42513), (8043, 31857), (10619, 24129), (13653, 18767), (14171, 18081), (15703, 16317)]