256412160

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:419

約数の個数: 240

約数和(自身を含む): 919226880

約数和(自身を除く): 662814720

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, 256, 279, 288, 310, 320, 359, 360, 372, 384, 465, 480, 496, 512, 558, 576, 620, 640, 718, 720, 744, 768, 930, 960, 992, 1077, 1116, 1152, 1240, 1280, 1395, 1436, 1440, 1488, 1536, 1795, 1860, 1920, 1984, 2154, 2232, 2304, 2480, 2560, 2790, 2872, 2880, 2976, 3231, 3590, 3720, 3840, 3968, 4308, 4464, 4608, 4960, 5385, 5580, 5744, 5760, 5952, 6462, 7180, 7440, 7680, 7936, 8616, 8928, 9920, 10770, 11129, 11160, 11488, 11520, 11904, 12924, 14360, 14880, 15872, 16155, 17232, 17856, 19840, 21540, 22258, 22320, 22976, 23040, 23808, 25848, 28720, 29760, 32310, 33387, 34464, 35712, 39680, 43080, 44516, 44640, 45952, 47616, 51696, 55645, 57440, 59520, 64620, 66774, 68928, 71424, 79360, 86160, 89032, 89280, 91904, 100161, 103392, 111290, 114880, 119040, 129240, 133548, 137856, 142848, 166935, 172320, 178064, 178560, 183808, 200322, 206784, 222580, 229760, 238080, 258480, 267096, 275712, 333870, 344640, 356128, 357120, 400644, 413568, 445160, 459520, 500805, 516960, 534192, 551424, 667740, 689280, 712256, 714240, 801288, 827136, 890320, 919040, 1001610, 1033920, 1068384, 1335480, 1378560, 1424512, 1602576, 1654272, 1780640, 2003220, 2067840, 2136768, 2670960, 2757120, 2849024, 3205152, 3561280, 4006440, 4135680, 4273536, 5341920, 5698048, 6410304, 7122560, 8012880, 8271360, 8547072, 10683840, 12820608, 14245120, 16025760, 17094144, 21367680, 25641216, 28490240, 32051520, 42735360, 51282432, 64103040, 85470720, 128206080, 256412160]

約数ペア:

[(1, 256412160), (2, 128206080), (3, 85470720), (4, 64103040), (5, 51282432), (6, 42735360), (8, 32051520), (9, 28490240), (10, 25641216), (12, 21367680), (15, 17094144), (16, 16025760), (18, 14245120), (20, 12820608), (24, 10683840), (30, 8547072), (31, 8271360), (32, 8012880), (36, 7122560), (40, 6410304), (45, 5698048), (48, 5341920), (60, 4273536), (62, 4135680), (64, 4006440), (72, 3561280), (80, 3205152), (90, 2849024), (93, 2757120), (96, 2670960), (120, 2136768), (124, 2067840), (128, 2003220), (144, 1780640), (155, 1654272), (160, 1602576), (180, 1424512), (186, 1378560), (192, 1335480), (240, 1068384), (248, 1033920), (256, 1001610), (279, 919040), (288, 890320), (310, 827136), (320, 801288), (359, 714240), (360, 712256), (372, 689280), (384, 667740), (465, 551424), (480, 534192), (496, 516960), (512, 500805), (558, 459520), (576, 445160), (620, 413568), (640, 400644), (718, 357120), (720, 356128), (744, 344640), (768, 333870), (930, 275712), (960, 267096), (992, 258480), (1077, 238080), (1116, 229760), (1152, 222580), (1240, 206784), (1280, 200322), (1395, 183808), (1436, 178560), (1440, 178064), (1488, 172320), (1536, 166935), (1795, 142848), (1860, 137856), (1920, 133548), (1984, 129240), (2154, 119040), (2232, 114880), (2304, 111290), (2480, 103392), (2560, 100161), (2790, 91904), (2872, 89280), (2880, 89032), (2976, 86160), (3231, 79360), (3590, 71424), (3720, 68928), (3840, 66774), (3968, 64620), (4308, 59520), (4464, 57440), (4608, 55645), (4960, 51696), (5385, 47616), (5580, 45952), (5744, 44640), (5760, 44516), (5952, 43080), (6462, 39680), (7180, 35712), (7440, 34464), (7680, 33387), (7936, 32310), (8616, 29760), (8928, 28720), (9920, 25848), (10770, 23808), (11129, 23040), (11160, 22976), (11488, 22320), (11520, 22258), (11904, 21540), (12924, 19840), (14360, 17856), (14880, 17232), (15872, 16155)]