257195520

素因数分解:

$2^9\times 3^3\times 5^1\times {\mathrm{61}}^2$

素因数の和:154

約数の個数: 240

約数和(自身を含む): 928802160

約数和(自身を除く): 671606640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 61, 64, 72, 80, 90, 96, 108, 120, 122, 128, 135, 144, 160, 180, 183, 192, 216, 240, 244, 256, 270, 288, 305, 320, 360, 366, 384, 432, 480, 488, 512, 540, 549, 576, 610, 640, 720, 732, 768, 864, 915, 960, 976, 1080, 1098, 1152, 1220, 1280, 1440, 1464, 1536, 1647, 1728, 1830, 1920, 1952, 2160, 2196, 2304, 2440, 2560, 2745, 2880, 2928, 3294, 3456, 3660, 3721, 3840, 3904, 4320, 4392, 4608, 4880, 5490, 5760, 5856, 6588, 6912, 7320, 7442, 7680, 7808, 8235, 8640, 8784, 9760, 10980, 11163, 11520, 11712, 13176, 13824, 14640, 14884, 15616, 16470, 17280, 17568, 18605, 19520, 21960, 22326, 23040, 23424, 26352, 29280, 29768, 31232, 32940, 33489, 34560, 35136, 37210, 39040, 43920, 44652, 46848, 52704, 55815, 58560, 59536, 65880, 66978, 69120, 70272, 74420, 78080, 87840, 89304, 93696, 100467, 105408, 111630, 117120, 119072, 131760, 133956, 140544, 148840, 156160, 167445, 175680, 178608, 200934, 210816, 223260, 234240, 238144, 263520, 267912, 281088, 297680, 334890, 351360, 357216, 401868, 421632, 446520, 468480, 476288, 502335, 527040, 535824, 595360, 669780, 702720, 714432, 803736, 843264, 893040, 952576, 1004670, 1054080, 1071648, 1190720, 1339560, 1405440, 1428864, 1607472, 1786080, 1905152, 2009340, 2108160, 2143296, 2381440, 2679120, 2857728, 3214944, 3572160, 4018680, 4216320, 4286592, 4762880, 5358240, 5715456, 6429888, 7144320, 8037360, 8573184, 9525760, 10716480, 12859776, 14288640, 16074720, 17146368, 21432960, 25719552, 28577280, 32149440, 42865920, 51439104, 64298880, 85731840, 128597760, 257195520]

約数ペア:

[(1, 257195520), (2, 128597760), (3, 85731840), (4, 64298880), (5, 51439104), (6, 42865920), (8, 32149440), (9, 28577280), (10, 25719552), (12, 21432960), (15, 17146368), (16, 16074720), (18, 14288640), (20, 12859776), (24, 10716480), (27, 9525760), (30, 8573184), (32, 8037360), (36, 7144320), (40, 6429888), (45, 5715456), (48, 5358240), (54, 4762880), (60, 4286592), (61, 4216320), (64, 4018680), (72, 3572160), (80, 3214944), (90, 2857728), (96, 2679120), (108, 2381440), (120, 2143296), (122, 2108160), (128, 2009340), (135, 1905152), (144, 1786080), (160, 1607472), (180, 1428864), (183, 1405440), (192, 1339560), (216, 1190720), (240, 1071648), (244, 1054080), (256, 1004670), (270, 952576), (288, 893040), (305, 843264), (320, 803736), (360, 714432), (366, 702720), (384, 669780), (432, 595360), (480, 535824), (488, 527040), (512, 502335), (540, 476288), (549, 468480), (576, 446520), (610, 421632), (640, 401868), (720, 357216), (732, 351360), (768, 334890), (864, 297680), (915, 281088), (960, 267912), (976, 263520), (1080, 238144), (1098, 234240), (1152, 223260), (1220, 210816), (1280, 200934), (1440, 178608), (1464, 175680), (1536, 167445), (1647, 156160), (1728, 148840), (1830, 140544), (1920, 133956), (1952, 131760), (2160, 119072), (2196, 117120), (2304, 111630), (2440, 105408), (2560, 100467), (2745, 93696), (2880, 89304), (2928, 87840), (3294, 78080), (3456, 74420), (3660, 70272), (3721, 69120), (3840, 66978), (3904, 65880), (4320, 59536), (4392, 58560), (4608, 55815), (4880, 52704), (5490, 46848), (5760, 44652), (5856, 43920), (6588, 39040), (6912, 37210), (7320, 35136), (7442, 34560), (7680, 33489), (7808, 32940), (8235, 31232), (8640, 29768), (8784, 29280), (9760, 26352), (10980, 23424), (11163, 23040), (11520, 22326), (11712, 21960), (13176, 19520), (13824, 18605), (14640, 17568), (14884, 17280), (15616, 16470)]