257872384

素因数分解:

$2^9\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:278

約数の個数: 160

約数和(自身を含む): 666243072

約数和(自身を除く): 408370688

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 32, 44, 56, 62, 64, 77, 88, 112, 124, 128, 154, 176, 211, 217, 224, 248, 256, 308, 341, 352, 422, 434, 448, 496, 512, 616, 682, 704, 844, 868, 896, 992, 1232, 1364, 1408, 1477, 1688, 1736, 1792, 1984, 2321, 2387, 2464, 2728, 2816, 2954, 3376, 3472, 3584, 3968, 4642, 4774, 4928, 5456, 5632, 5908, 6541, 6752, 6944, 7936, 9284, 9548, 9856, 10912, 11816, 13082, 13504, 13888, 15872, 16247, 18568, 19096, 19712, 21824, 23632, 26164, 27008, 27776, 32494, 37136, 38192, 39424, 43648, 45787, 47264, 52328, 54016, 55552, 64988, 71951, 74272, 76384, 87296, 91574, 94528, 104656, 108032, 111104, 129976, 143902, 148544, 152768, 174592, 183148, 189056, 209312, 259952, 287804, 297088, 305536, 366296, 378112, 418624, 503657, 519904, 575608, 594176, 611072, 732592, 756224, 837248, 1007314, 1039808, 1151216, 1188352, 1222144, 1465184, 1674496, 2014628, 2079616, 2302432, 2930368, 3348992, 4029256, 4159232, 4604864, 5860736, 8058512, 8318464, 9209728, 11721472, 16117024, 18419456, 23442944, 32234048, 36838912, 64468096, 128936192, 257872384]

約数ペア:

[(1, 257872384), (2, 128936192), (4, 64468096), (7, 36838912), (8, 32234048), (11, 23442944), (14, 18419456), (16, 16117024), (22, 11721472), (28, 9209728), (31, 8318464), (32, 8058512), (44, 5860736), (56, 4604864), (62, 4159232), (64, 4029256), (77, 3348992), (88, 2930368), (112, 2302432), (124, 2079616), (128, 2014628), (154, 1674496), (176, 1465184), (211, 1222144), (217, 1188352), (224, 1151216), (248, 1039808), (256, 1007314), (308, 837248), (341, 756224), (352, 732592), (422, 611072), (434, 594176), (448, 575608), (496, 519904), (512, 503657), (616, 418624), (682, 378112), (704, 366296), (844, 305536), (868, 297088), (896, 287804), (992, 259952), (1232, 209312), (1364, 189056), (1408, 183148), (1477, 174592), (1688, 152768), (1736, 148544), (1792, 143902), (1984, 129976), (2321, 111104), (2387, 108032), (2464, 104656), (2728, 94528), (2816, 91574), (2954, 87296), (3376, 76384), (3472, 74272), (3584, 71951), (3968, 64988), (4642, 55552), (4774, 54016), (4928, 52328), (5456, 47264), (5632, 45787), (5908, 43648), (6541, 39424), (6752, 38192), (6944, 37136), (7936, 32494), (9284, 27776), (9548, 27008), (9856, 26164), (10912, 23632), (11816, 21824), (13082, 19712), (13504, 19096), (13888, 18568), (15872, 16247)]