256590720

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:538

約数の個数: 256

約数和(自身を含む): 940032000

約数和(自身を除く): 683441280

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, 64, 72, 80, 90, 93, 96, 108, 120, 124, 128, 135, 144, 155, 160, 180, 186, 192, 216, 240, 248, 270, 279, 288, 310, 320, 360, 372, 384, 432, 465, 479, 480, 496, 540, 558, 576, 620, 640, 720, 744, 837, 864, 930, 958, 960, 992, 1080, 1116, 1152, 1240, 1395, 1437, 1440, 1488, 1674, 1728, 1860, 1916, 1920, 1984, 2160, 2232, 2395, 2480, 2790, 2874, 2880, 2976, 3348, 3456, 3720, 3832, 3968, 4185, 4311, 4320, 4464, 4790, 4960, 5580, 5748, 5760, 5952, 6696, 7185, 7440, 7664, 8370, 8622, 8640, 8928, 9580, 9920, 11160, 11496, 11904, 12933, 13392, 14370, 14849, 14880, 15328, 16740, 17244, 17280, 17856, 19160, 19840, 21555, 22320, 22992, 25866, 26784, 28740, 29698, 29760, 30656, 33480, 34488, 35712, 38320, 43110, 44547, 44640, 45984, 51732, 53568, 57480, 59396, 59520, 61312, 64665, 66960, 68976, 74245, 76640, 86220, 89094, 89280, 91968, 103464, 107136, 114960, 118792, 129330, 133641, 133920, 137952, 148490, 153280, 172440, 178188, 178560, 183936, 206928, 222735, 229920, 237584, 258660, 267282, 267840, 275904, 296980, 306560, 344880, 356376, 400923, 413856, 445470, 459840, 475168, 517320, 534564, 535680, 551808, 593960, 668205, 689760, 712752, 801846, 827712, 890940, 919680, 950336, 1034640, 1069128, 1187920, 1336410, 1379520, 1425504, 1603692, 1655424, 1781880, 1900672, 2004615, 2069280, 2138256, 2375840, 2672820, 2759040, 2851008, 3207384, 3563760, 4009230, 4138560, 4276512, 4751680, 5345640, 5702016, 6414768, 7127520, 8018460, 8277120, 8553024, 9503360, 10691280, 12829536, 14255040, 16036920, 17106048, 21382560, 25659072, 28510080, 32073840, 42765120, 51318144, 64147680, 85530240, 128295360, 256590720]

約数ペア:

[(1, 256590720), (2, 128295360), (3, 85530240), (4, 64147680), (5, 51318144), (6, 42765120), (8, 32073840), (9, 28510080), (10, 25659072), (12, 21382560), (15, 17106048), (16, 16036920), (18, 14255040), (20, 12829536), (24, 10691280), (27, 9503360), (30, 8553024), (31, 8277120), (32, 8018460), (36, 7127520), (40, 6414768), (45, 5702016), (48, 5345640), (54, 4751680), (60, 4276512), (62, 4138560), (64, 4009230), (72, 3563760), (80, 3207384), (90, 2851008), (93, 2759040), (96, 2672820), (108, 2375840), (120, 2138256), (124, 2069280), (128, 2004615), (135, 1900672), (144, 1781880), (155, 1655424), (160, 1603692), (180, 1425504), (186, 1379520), (192, 1336410), (216, 1187920), (240, 1069128), (248, 1034640), (270, 950336), (279, 919680), (288, 890940), (310, 827712), (320, 801846), (360, 712752), (372, 689760), (384, 668205), (432, 593960), (465, 551808), (479, 535680), (480, 534564), (496, 517320), (540, 475168), (558, 459840), (576, 445470), (620, 413856), (640, 400923), (720, 356376), (744, 344880), (837, 306560), (864, 296980), (930, 275904), (958, 267840), (960, 267282), (992, 258660), (1080, 237584), (1116, 229920), (1152, 222735), (1240, 206928), (1395, 183936), (1437, 178560), (1440, 178188), (1488, 172440), (1674, 153280), (1728, 148490), (1860, 137952), (1916, 133920), (1920, 133641), (1984, 129330), (2160, 118792), (2232, 114960), (2395, 107136), (2480, 103464), (2790, 91968), (2874, 89280), (2880, 89094), (2976, 86220), (3348, 76640), (3456, 74245), (3720, 68976), (3832, 66960), (3968, 64665), (4185, 61312), (4311, 59520), (4320, 59396), (4464, 57480), (4790, 53568), (4960, 51732), (5580, 45984), (5748, 44640), (5760, 44547), (5952, 43110), (6696, 38320), (7185, 35712), (7440, 34488), (7664, 33480), (8370, 30656), (8622, 29760), (8640, 29698), (8928, 28740), (9580, 26784), (9920, 25866), (11160, 22992), (11496, 22320), (11904, 21555), (12933, 19840), (13392, 19160), (14370, 17856), (14849, 17280), (14880, 17244), (15328, 16740)]