257653760

素因数分解:

$2^{10}\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:131

約数の個数: 264

約数和(自身を含む): 784082880

約数和(自身を除く): 526429120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 79, 80, 91, 98, 104, 112, 128, 130, 140, 158, 160, 182, 196, 208, 224, 245, 256, 260, 280, 316, 320, 364, 392, 395, 416, 448, 455, 490, 512, 520, 553, 560, 632, 637, 640, 728, 784, 790, 832, 896, 910, 980, 1024, 1027, 1040, 1106, 1120, 1264, 1274, 1280, 1456, 1568, 1580, 1664, 1792, 1820, 1960, 2054, 2080, 2212, 2240, 2528, 2548, 2560, 2765, 2912, 3136, 3160, 3185, 3328, 3584, 3640, 3871, 3920, 4108, 4160, 4424, 4480, 5056, 5096, 5120, 5135, 5530, 5824, 6272, 6320, 6370, 6656, 7168, 7189, 7280, 7742, 7840, 8216, 8320, 8848, 8960, 10112, 10192, 10270, 11060, 11648, 12544, 12640, 12740, 13312, 14378, 14560, 15484, 15680, 16432, 16640, 17696, 17920, 19355, 20224, 20384, 20540, 22120, 23296, 25088, 25280, 25480, 28756, 29120, 30968, 31360, 32864, 33280, 35392, 35840, 35945, 38710, 40448, 40768, 41080, 44240, 46592, 50176, 50323, 50560, 50960, 57512, 58240, 61936, 62720, 65728, 66560, 70784, 71890, 77420, 80896, 81536, 82160, 88480, 93184, 100646, 101120, 101920, 115024, 116480, 123872, 125440, 131456, 141568, 143780, 154840, 163072, 164320, 176960, 201292, 202240, 203840, 230048, 232960, 247744, 250880, 251615, 262912, 283136, 287560, 309680, 326144, 328640, 353920, 402584, 404480, 407680, 460096, 465920, 495488, 503230, 525824, 566272, 575120, 619360, 652288, 657280, 707840, 805168, 815360, 920192, 990976, 1006460, 1051648, 1150240, 1238720, 1314560, 1415680, 1610336, 1630720, 1840384, 1981952, 2012920, 2300480, 2477440, 2629120, 2831360, 3220672, 3261440, 3680768, 3963904, 4025840, 4600960, 4954880, 5258240, 6441344, 7361536, 8051680, 9201920, 9909760, 12882688, 16103360, 18403840, 19819520, 25765376, 32206720, 36807680, 51530752, 64413440, 128826880, 257653760]

約数ペア:

[(1, 257653760), (2, 128826880), (4, 64413440), (5, 51530752), (7, 36807680), (8, 32206720), (10, 25765376), (13, 19819520), (14, 18403840), (16, 16103360), (20, 12882688), (26, 9909760), (28, 9201920), (32, 8051680), (35, 7361536), (40, 6441344), (49, 5258240), (52, 4954880), (56, 4600960), (64, 4025840), (65, 3963904), (70, 3680768), (79, 3261440), (80, 3220672), (91, 2831360), (98, 2629120), (104, 2477440), (112, 2300480), (128, 2012920), (130, 1981952), (140, 1840384), (158, 1630720), (160, 1610336), (182, 1415680), (196, 1314560), (208, 1238720), (224, 1150240), (245, 1051648), (256, 1006460), (260, 990976), (280, 920192), (316, 815360), (320, 805168), (364, 707840), (392, 657280), (395, 652288), (416, 619360), (448, 575120), (455, 566272), (490, 525824), (512, 503230), (520, 495488), (553, 465920), (560, 460096), (632, 407680), (637, 404480), (640, 402584), (728, 353920), (784, 328640), (790, 326144), (832, 309680), (896, 287560), (910, 283136), (980, 262912), (1024, 251615), (1027, 250880), (1040, 247744), (1106, 232960), (1120, 230048), (1264, 203840), (1274, 202240), (1280, 201292), (1456, 176960), (1568, 164320), (1580, 163072), (1664, 154840), (1792, 143780), (1820, 141568), (1960, 131456), (2054, 125440), (2080, 123872), (2212, 116480), (2240, 115024), (2528, 101920), (2548, 101120), (2560, 100646), (2765, 93184), (2912, 88480), (3136, 82160), (3160, 81536), (3185, 80896), (3328, 77420), (3584, 71890), (3640, 70784), (3871, 66560), (3920, 65728), (4108, 62720), (4160, 61936), (4424, 58240), (4480, 57512), (5056, 50960), (5096, 50560), (5120, 50323), (5135, 50176), (5530, 46592), (5824, 44240), (6272, 41080), (6320, 40768), (6370, 40448), (6656, 38710), (7168, 35945), (7189, 35840), (7280, 35392), (7742, 33280), (7840, 32864), (8216, 31360), (8320, 30968), (8848, 29120), (8960, 28756), (10112, 25480), (10192, 25280), (10270, 25088), (11060, 23296), (11648, 22120), (12544, 20540), (12640, 20384), (12740, 20224), (13312, 19355), (14378, 17920), (14560, 17696), (15484, 16640), (15680, 16432)]