256947840

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1439}}^1$

素因数の和:1495

約数の個数: 192

約数和(自身を含む): 916531200

約数和(自身を除く): 659583360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 62, 64, 72, 80, 90, 93, 96, 120, 124, 128, 144, 155, 160, 180, 186, 192, 240, 248, 279, 288, 310, 320, 360, 372, 384, 465, 480, 496, 558, 576, 620, 640, 720, 744, 930, 960, 992, 1116, 1152, 1240, 1395, 1439, 1440, 1488, 1860, 1920, 1984, 2232, 2480, 2790, 2878, 2880, 2976, 3720, 3968, 4317, 4464, 4960, 5580, 5756, 5760, 5952, 7195, 7440, 8634, 8928, 9920, 11160, 11512, 11904, 12951, 14390, 14880, 17268, 17856, 19840, 21585, 22320, 23024, 25902, 28780, 29760, 34536, 35712, 43170, 44609, 44640, 46048, 51804, 57560, 59520, 64755, 69072, 86340, 89218, 89280, 92096, 103608, 115120, 129510, 133827, 138144, 172680, 178436, 178560, 184192, 207216, 223045, 230240, 259020, 267654, 276288, 345360, 356872, 401481, 414432, 446090, 460480, 518040, 535308, 552576, 669135, 690720, 713744, 802962, 828864, 892180, 920960, 1036080, 1070616, 1338270, 1381440, 1427488, 1605924, 1657728, 1784360, 2007405, 2072160, 2141232, 2676540, 2762880, 2854976, 3211848, 3568720, 4014810, 4144320, 4282464, 5353080, 5709952, 6423696, 7137440, 8029620, 8288640, 8564928, 10706160, 12847392, 14274880, 16059240, 17129856, 21412320, 25694784, 28549760, 32118480, 42824640, 51389568, 64236960, 85649280, 128473920, 256947840]

約数ペア:

[(1, 256947840), (2, 128473920), (3, 85649280), (4, 64236960), (5, 51389568), (6, 42824640), (8, 32118480), (9, 28549760), (10, 25694784), (12, 21412320), (15, 17129856), (16, 16059240), (18, 14274880), (20, 12847392), (24, 10706160), (30, 8564928), (31, 8288640), (32, 8029620), (36, 7137440), (40, 6423696), (45, 5709952), (48, 5353080), (60, 4282464), (62, 4144320), (64, 4014810), (72, 3568720), (80, 3211848), (90, 2854976), (93, 2762880), (96, 2676540), (120, 2141232), (124, 2072160), (128, 2007405), (144, 1784360), (155, 1657728), (160, 1605924), (180, 1427488), (186, 1381440), (192, 1338270), (240, 1070616), (248, 1036080), (279, 920960), (288, 892180), (310, 828864), (320, 802962), (360, 713744), (372, 690720), (384, 669135), (465, 552576), (480, 535308), (496, 518040), (558, 460480), (576, 446090), (620, 414432), (640, 401481), (720, 356872), (744, 345360), (930, 276288), (960, 267654), (992, 259020), (1116, 230240), (1152, 223045), (1240, 207216), (1395, 184192), (1439, 178560), (1440, 178436), (1488, 172680), (1860, 138144), (1920, 133827), (1984, 129510), (2232, 115120), (2480, 103608), (2790, 92096), (2878, 89280), (2880, 89218), (2976, 86340), (3720, 69072), (3968, 64755), (4317, 59520), (4464, 57560), (4960, 51804), (5580, 46048), (5756, 44640), (5760, 44609), (5952, 43170), (7195, 35712), (7440, 34536), (8634, 29760), (8928, 28780), (9920, 25902), (11160, 23024), (11512, 22320), (11904, 21585), (12951, 19840), (14390, 17856), (14880, 17268)]