256826880

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:257

約数の個数: 240

約数和(自身を含む): 907736544

約数和(自身を除く): 650909664

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 71, 72, 80, 90, 96, 120, 128, 142, 144, 157, 160, 180, 192, 213, 240, 256, 284, 288, 314, 320, 355, 360, 384, 426, 471, 480, 512, 568, 576, 628, 639, 640, 710, 720, 768, 785, 852, 942, 960, 1065, 1136, 1152, 1256, 1278, 1280, 1413, 1420, 1440, 1536, 1570, 1704, 1884, 1920, 2130, 2272, 2304, 2355, 2512, 2556, 2560, 2826, 2840, 2880, 3140, 3195, 3408, 3768, 3840, 4260, 4544, 4608, 4710, 5024, 5112, 5652, 5680, 5760, 6280, 6390, 6816, 7065, 7536, 7680, 8520, 9088, 9420, 10048, 10224, 11147, 11304, 11360, 11520, 12560, 12780, 13632, 14130, 15072, 17040, 18176, 18840, 20096, 20448, 22294, 22608, 22720, 23040, 25120, 25560, 27264, 28260, 30144, 33441, 34080, 36352, 37680, 40192, 40896, 44588, 45216, 45440, 50240, 51120, 54528, 55735, 56520, 60288, 66882, 68160, 75360, 80384, 81792, 89176, 90432, 90880, 100323, 100480, 102240, 109056, 111470, 113040, 120576, 133764, 136320, 150720, 163584, 167205, 178352, 180864, 181760, 200646, 200960, 204480, 222940, 226080, 241152, 267528, 272640, 301440, 327168, 334410, 356704, 361728, 401292, 401920, 408960, 445880, 452160, 501615, 535056, 545280, 602880, 668820, 713408, 723456, 802584, 817920, 891760, 904320, 1003230, 1070112, 1205760, 1337640, 1426816, 1605168, 1635840, 1783520, 1808640, 2006460, 2140224, 2675280, 2853632, 3210336, 3567040, 3617280, 4012920, 4280448, 5350560, 5707264, 6420672, 7134080, 8025840, 8560896, 10701120, 12841344, 14268160, 16051680, 17121792, 21402240, 25682688, 28536320, 32103360, 42804480, 51365376, 64206720, 85608960, 128413440, 256826880]

約数ペア:

[(1, 256826880), (2, 128413440), (3, 85608960), (4, 64206720), (5, 51365376), (6, 42804480), (8, 32103360), (9, 28536320), (10, 25682688), (12, 21402240), (15, 17121792), (16, 16051680), (18, 14268160), (20, 12841344), (24, 10701120), (30, 8560896), (32, 8025840), (36, 7134080), (40, 6420672), (45, 5707264), (48, 5350560), (60, 4280448), (64, 4012920), (71, 3617280), (72, 3567040), (80, 3210336), (90, 2853632), (96, 2675280), (120, 2140224), (128, 2006460), (142, 1808640), (144, 1783520), (157, 1635840), (160, 1605168), (180, 1426816), (192, 1337640), (213, 1205760), (240, 1070112), (256, 1003230), (284, 904320), (288, 891760), (314, 817920), (320, 802584), (355, 723456), (360, 713408), (384, 668820), (426, 602880), (471, 545280), (480, 535056), (512, 501615), (568, 452160), (576, 445880), (628, 408960), (639, 401920), (640, 401292), (710, 361728), (720, 356704), (768, 334410), (785, 327168), (852, 301440), (942, 272640), (960, 267528), (1065, 241152), (1136, 226080), (1152, 222940), (1256, 204480), (1278, 200960), (1280, 200646), (1413, 181760), (1420, 180864), (1440, 178352), (1536, 167205), (1570, 163584), (1704, 150720), (1884, 136320), (1920, 133764), (2130, 120576), (2272, 113040), (2304, 111470), (2355, 109056), (2512, 102240), (2556, 100480), (2560, 100323), (2826, 90880), (2840, 90432), (2880, 89176), (3140, 81792), (3195, 80384), (3408, 75360), (3768, 68160), (3840, 66882), (4260, 60288), (4544, 56520), (4608, 55735), (4710, 54528), (5024, 51120), (5112, 50240), (5652, 45440), (5680, 45216), (5760, 44588), (6280, 40896), (6390, 40192), (6816, 37680), (7065, 36352), (7536, 34080), (7680, 33441), (8520, 30144), (9088, 28260), (9420, 27264), (10048, 25560), (10224, 25120), (11147, 23040), (11304, 22720), (11360, 22608), (11520, 22294), (12560, 20448), (12780, 20096), (13632, 18840), (14130, 18176), (15072, 17040)]