257528160

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:699

約数の個数: 240

約数和(自身を含む): 939641472

約数和(自身を除く): 682113312

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 32, 36, 40, 45, 48, 54, 60, 62, 72, 80, 81, 90, 93, 96, 108, 120, 124, 135, 144, 155, 160, 162, 180, 186, 216, 240, 248, 270, 279, 288, 310, 324, 360, 372, 405, 432, 465, 480, 496, 540, 558, 620, 641, 648, 720, 744, 810, 837, 864, 930, 992, 1080, 1116, 1240, 1282, 1296, 1395, 1440, 1488, 1620, 1674, 1860, 1923, 2160, 2232, 2480, 2511, 2564, 2592, 2790, 2976, 3205, 3240, 3348, 3720, 3846, 4185, 4320, 4464, 4960, 5022, 5128, 5580, 5769, 6410, 6480, 6696, 7440, 7692, 8370, 8928, 9615, 10044, 10256, 11160, 11538, 12555, 12820, 12960, 13392, 14880, 15384, 16740, 17307, 19230, 19871, 20088, 20512, 22320, 23076, 25110, 25640, 26784, 28845, 30768, 33480, 34614, 38460, 39742, 40176, 44640, 46152, 50220, 51280, 51921, 57690, 59613, 61536, 66960, 69228, 76920, 79484, 80352, 86535, 92304, 99355, 100440, 102560, 103842, 115380, 119226, 133920, 138456, 153840, 158968, 173070, 178839, 184608, 198710, 200880, 207684, 230760, 238452, 259605, 276912, 298065, 307680, 317936, 346140, 357678, 397420, 401760, 415368, 461520, 476904, 519210, 536517, 553824, 596130, 635872, 692280, 715356, 794840, 830736, 894195, 923040, 953808, 1038420, 1073034, 1192260, 1384560, 1430712, 1589680, 1609551, 1661472, 1788390, 1907616, 2076840, 2146068, 2384520, 2682585, 2769120, 2861424, 3179360, 3219102, 3576780, 4153680, 4292136, 4769040, 5365170, 5722848, 6438204, 7153560, 8047755, 8307360, 8584272, 9538080, 10730340, 12876408, 14307120, 16095510, 17168544, 21460680, 25752816, 28614240, 32191020, 42921360, 51505632, 64382040, 85842720, 128764080, 257528160]

約数ペア:

[(1, 257528160), (2, 128764080), (3, 85842720), (4, 64382040), (5, 51505632), (6, 42921360), (8, 32191020), (9, 28614240), (10, 25752816), (12, 21460680), (15, 17168544), (16, 16095510), (18, 14307120), (20, 12876408), (24, 10730340), (27, 9538080), (30, 8584272), (31, 8307360), (32, 8047755), (36, 7153560), (40, 6438204), (45, 5722848), (48, 5365170), (54, 4769040), (60, 4292136), (62, 4153680), (72, 3576780), (80, 3219102), (81, 3179360), (90, 2861424), (93, 2769120), (96, 2682585), (108, 2384520), (120, 2146068), (124, 2076840), (135, 1907616), (144, 1788390), (155, 1661472), (160, 1609551), (162, 1589680), (180, 1430712), (186, 1384560), (216, 1192260), (240, 1073034), (248, 1038420), (270, 953808), (279, 923040), (288, 894195), (310, 830736), (324, 794840), (360, 715356), (372, 692280), (405, 635872), (432, 596130), (465, 553824), (480, 536517), (496, 519210), (540, 476904), (558, 461520), (620, 415368), (641, 401760), (648, 397420), (720, 357678), (744, 346140), (810, 317936), (837, 307680), (864, 298065), (930, 276912), (992, 259605), (1080, 238452), (1116, 230760), (1240, 207684), (1282, 200880), (1296, 198710), (1395, 184608), (1440, 178839), (1488, 173070), (1620, 158968), (1674, 153840), (1860, 138456), (1923, 133920), (2160, 119226), (2232, 115380), (2480, 103842), (2511, 102560), (2564, 100440), (2592, 99355), (2790, 92304), (2976, 86535), (3205, 80352), (3240, 79484), (3348, 76920), (3720, 69228), (3846, 66960), (4185, 61536), (4320, 59613), (4464, 57690), (4960, 51921), (5022, 51280), (5128, 50220), (5580, 46152), (5769, 44640), (6410, 40176), (6480, 39742), (6696, 38460), (7440, 34614), (7692, 33480), (8370, 30768), (8928, 28845), (9615, 26784), (10044, 25640), (10256, 25110), (11160, 23076), (11538, 22320), (12555, 20512), (12820, 20088), (12960, 19871), (13392, 19230), (14880, 17307), (15384, 16740)]