256689486

素因数分解:

$2^1\times 3^4\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{647}}^1$

素因数の和:771

約数の個数: 80

約数和(自身を含む): 602173440

約数和(自身を除く): 345483954

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 79, 81, 93, 158, 162, 186, 237, 279, 474, 558, 647, 711, 837, 1294, 1422, 1674, 1941, 2133, 2449, 2511, 3882, 4266, 4898, 5022, 5823, 6399, 7347, 11646, 12798, 14694, 17469, 20057, 22041, 34938, 40114, 44082, 51113, 52407, 60171, 66123, 102226, 104814, 120342, 132246, 153339, 180513, 198369, 306678, 361026, 396738, 460017, 541539, 920034, 1083078, 1380051, 1584503, 1624617, 2760102, 3169006, 3249234, 4140153, 4753509, 8280306, 9507018, 14260527, 28521054, 42781581, 85563162, 128344743, 256689486]

約数ペア:

[(1, 256689486), (2, 128344743), (3, 85563162), (6, 42781581), (9, 28521054), (18, 14260527), (27, 9507018), (31, 8280306), (54, 4753509), (62, 4140153), (79, 3249234), (81, 3169006), (93, 2760102), (158, 1624617), (162, 1584503), (186, 1380051), (237, 1083078), (279, 920034), (474, 541539), (558, 460017), (647, 396738), (711, 361026), (837, 306678), (1294, 198369), (1422, 180513), (1674, 153339), (1941, 132246), (2133, 120342), (2449, 104814), (2511, 102226), (3882, 66123), (4266, 60171), (4898, 52407), (5022, 51113), (5823, 44082), (6399, 40114), (7347, 34938), (11646, 22041), (12798, 20057), (14694, 17469)]