256555008

素因数分解:

$2^{11}\times 3^2\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:508

約数の個数: 144

約数和(自身を含む): 766584000

約数和(自身を除く): 510028992

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 48, 62, 64, 72, 93, 96, 124, 128, 144, 186, 192, 248, 256, 279, 288, 372, 384, 449, 496, 512, 558, 576, 744, 768, 898, 992, 1024, 1116, 1152, 1347, 1488, 1536, 1796, 1984, 2048, 2232, 2304, 2694, 2976, 3072, 3592, 3968, 4041, 4464, 4608, 5388, 5952, 6144, 7184, 7936, 8082, 8928, 9216, 10776, 11904, 13919, 14368, 15872, 16164, 17856, 18432, 21552, 23808, 27838, 28736, 31744, 32328, 35712, 41757, 43104, 47616, 55676, 57472, 63488, 64656, 71424, 83514, 86208, 95232, 111352, 114944, 125271, 129312, 142848, 167028, 172416, 190464, 222704, 229888, 250542, 258624, 285696, 334056, 344832, 445408, 459776, 501084, 517248, 571392, 668112, 689664, 890816, 919552, 1002168, 1034496, 1336224, 1379328, 1781632, 2004336, 2068992, 2672448, 2758656, 3563264, 4008672, 4137984, 5344896, 7126528, 8017344, 8275968, 10689792, 14253056, 16034688, 21379584, 28506112, 32069376, 42759168, 64138752, 85518336, 128277504, 256555008]

約数ペア:

[(1, 256555008), (2, 128277504), (3, 85518336), (4, 64138752), (6, 42759168), (8, 32069376), (9, 28506112), (12, 21379584), (16, 16034688), (18, 14253056), (24, 10689792), (31, 8275968), (32, 8017344), (36, 7126528), (48, 5344896), (62, 4137984), (64, 4008672), (72, 3563264), (93, 2758656), (96, 2672448), (124, 2068992), (128, 2004336), (144, 1781632), (186, 1379328), (192, 1336224), (248, 1034496), (256, 1002168), (279, 919552), (288, 890816), (372, 689664), (384, 668112), (449, 571392), (496, 517248), (512, 501084), (558, 459776), (576, 445408), (744, 344832), (768, 334056), (898, 285696), (992, 258624), (1024, 250542), (1116, 229888), (1152, 222704), (1347, 190464), (1488, 172416), (1536, 167028), (1796, 142848), (1984, 129312), (2048, 125271), (2232, 114944), (2304, 111352), (2694, 95232), (2976, 86208), (3072, 83514), (3592, 71424), (3968, 64656), (4041, 63488), (4464, 57472), (4608, 55676), (5388, 47616), (5952, 43104), (6144, 41757), (7184, 35712), (7936, 32328), (8082, 31744), (8928, 28736), (9216, 27838), (10776, 23808), (11904, 21552), (13919, 18432), (14368, 17856), (15872, 16164)]