257465978

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{41}}^1\times {\mathrm{337}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 498790656

約数和(自身を除く): 241324678

約数列:

[1, 2, 7, 11, 14, 22, 41, 77, 82, 121, 154, 242, 287, 337, 451, 574, 674, 847, 902, 1331, 1694, 2359, 2662, 3157, 3707, 4718, 4961, 6314, 7414, 9317, 9922, 13817, 18634, 25949, 27634, 34727, 40777, 51898, 54571, 69454, 81554, 96719, 109142, 151987, 193438, 285439, 303974, 381997, 448547, 570878, 763994, 897094, 1063909, 1671857, 2127818, 3139829, 3343714, 6279658, 11702999, 18390427, 23405998, 36780854, 128732989, 257465978]

約数ペア:

[(1, 257465978), (2, 128732989), (7, 36780854), (11, 23405998), (14, 18390427), (22, 11702999), (41, 6279658), (77, 3343714), (82, 3139829), (121, 2127818), (154, 1671857), (242, 1063909), (287, 897094), (337, 763994), (451, 570878), (574, 448547), (674, 381997), (847, 303974), (902, 285439), (1331, 193438), (1694, 151987), (2359, 109142), (2662, 96719), (3157, 81554), (3707, 69454), (4718, 54571), (4961, 51898), (6314, 40777), (7414, 34727), (9317, 27634), (9922, 25949), (13817, 18634)]