256697856

素因数分解:

$2^9\times 3^3\times {\mathrm{31}}^1\times {\mathrm{599}}^1$

素因数の和:657

約数の個数: 160

約数和(自身を含む): 785664000

約数和(自身を除く): 528966144

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 32, 36, 48, 54, 62, 64, 72, 93, 96, 108, 124, 128, 144, 186, 192, 216, 248, 256, 279, 288, 372, 384, 432, 496, 512, 558, 576, 599, 744, 768, 837, 864, 992, 1116, 1152, 1198, 1488, 1536, 1674, 1728, 1797, 1984, 2232, 2304, 2396, 2976, 3348, 3456, 3594, 3968, 4464, 4608, 4792, 5391, 5952, 6696, 6912, 7188, 7936, 8928, 9584, 10782, 11904, 13392, 13824, 14376, 15872, 16173, 17856, 18569, 19168, 21564, 23808, 26784, 28752, 32346, 35712, 37138, 38336, 43128, 47616, 53568, 55707, 57504, 64692, 71424, 74276, 76672, 86256, 107136, 111414, 115008, 129384, 142848, 148552, 153344, 167121, 172512, 214272, 222828, 230016, 258768, 297104, 306688, 334242, 345024, 428544, 445656, 460032, 501363, 517536, 594208, 668484, 690048, 891312, 920064, 1002726, 1035072, 1188416, 1336968, 1380096, 1782624, 2005452, 2070144, 2376832, 2673936, 2760192, 3565248, 4010904, 4140288, 4753664, 5347872, 7130496, 8021808, 8280576, 9507328, 10695744, 14260992, 16043616, 21391488, 28521984, 32087232, 42782976, 64174464, 85565952, 128348928, 256697856]

約数ペア:

[(1, 256697856), (2, 128348928), (3, 85565952), (4, 64174464), (6, 42782976), (8, 32087232), (9, 28521984), (12, 21391488), (16, 16043616), (18, 14260992), (24, 10695744), (27, 9507328), (31, 8280576), (32, 8021808), (36, 7130496), (48, 5347872), (54, 4753664), (62, 4140288), (64, 4010904), (72, 3565248), (93, 2760192), (96, 2673936), (108, 2376832), (124, 2070144), (128, 2005452), (144, 1782624), (186, 1380096), (192, 1336968), (216, 1188416), (248, 1035072), (256, 1002726), (279, 920064), (288, 891312), (372, 690048), (384, 668484), (432, 594208), (496, 517536), (512, 501363), (558, 460032), (576, 445656), (599, 428544), (744, 345024), (768, 334242), (837, 306688), (864, 297104), (992, 258768), (1116, 230016), (1152, 222828), (1198, 214272), (1488, 172512), (1536, 167121), (1674, 153344), (1728, 148552), (1797, 142848), (1984, 129384), (2232, 115008), (2304, 111414), (2396, 107136), (2976, 86256), (3348, 76672), (3456, 74276), (3594, 71424), (3968, 64692), (4464, 57504), (4608, 55707), (4792, 53568), (5391, 47616), (5952, 43128), (6696, 38336), (6912, 37138), (7188, 35712), (7936, 32346), (8928, 28752), (9584, 26784), (10782, 23808), (11904, 21564), (13392, 19168), (13824, 18569), (14376, 17856), (15872, 16173)]