251297280

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{839}}^1$

素因数の和:881

約数の個数: 240

約数和(自身を含む): 938377440

約数和(自身を除く): 687080160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 64, 65, 72, 78, 80, 90, 96, 104, 117, 120, 128, 130, 144, 156, 160, 180, 192, 195, 208, 234, 240, 256, 260, 288, 312, 320, 360, 384, 390, 416, 468, 480, 512, 520, 576, 585, 624, 640, 720, 768, 780, 832, 839, 936, 960, 1040, 1152, 1170, 1248, 1280, 1440, 1536, 1560, 1664, 1678, 1872, 1920, 2080, 2304, 2340, 2496, 2517, 2560, 2880, 3120, 3328, 3356, 3744, 3840, 4160, 4195, 4608, 4680, 4992, 5034, 5760, 6240, 6656, 6712, 7488, 7551, 7680, 8320, 8390, 9360, 9984, 10068, 10907, 11520, 12480, 12585, 13424, 14976, 15102, 16640, 16780, 18720, 19968, 20136, 21814, 23040, 24960, 25170, 26848, 29952, 30204, 32721, 33280, 33560, 37440, 37755, 40272, 43628, 49920, 50340, 53696, 54535, 59904, 60408, 65442, 67120, 74880, 75510, 80544, 87256, 98163, 99840, 100680, 107392, 109070, 120816, 130884, 134240, 149760, 151020, 161088, 163605, 174512, 196326, 201360, 214784, 218140, 241632, 261768, 268480, 299520, 302040, 322176, 327210, 349024, 392652, 402720, 429568, 436280, 483264, 490815, 523536, 536960, 604080, 644352, 654420, 698048, 785304, 805440, 872560, 966528, 981630, 1047072, 1073920, 1208160, 1288704, 1308840, 1396096, 1570608, 1610880, 1745120, 1933056, 1963260, 2094144, 2147840, 2416320, 2617680, 2792192, 3141216, 3221760, 3490240, 3866112, 3926520, 4188288, 4832640, 5235360, 5584384, 6282432, 6443520, 6980480, 7853040, 8376576, 9665280, 10470720, 12564864, 13960960, 15706080, 16753152, 19330560, 20941440, 25129728, 27921920, 31412160, 41882880, 50259456, 62824320, 83765760, 125648640, 251297280]

約数ペア:

[(1, 251297280), (2, 125648640), (3, 83765760), (4, 62824320), (5, 50259456), (6, 41882880), (8, 31412160), (9, 27921920), (10, 25129728), (12, 20941440), (13, 19330560), (15, 16753152), (16, 15706080), (18, 13960960), (20, 12564864), (24, 10470720), (26, 9665280), (30, 8376576), (32, 7853040), (36, 6980480), (39, 6443520), (40, 6282432), (45, 5584384), (48, 5235360), (52, 4832640), (60, 4188288), (64, 3926520), (65, 3866112), (72, 3490240), (78, 3221760), (80, 3141216), (90, 2792192), (96, 2617680), (104, 2416320), (117, 2147840), (120, 2094144), (128, 1963260), (130, 1933056), (144, 1745120), (156, 1610880), (160, 1570608), (180, 1396096), (192, 1308840), (195, 1288704), (208, 1208160), (234, 1073920), (240, 1047072), (256, 981630), (260, 966528), (288, 872560), (312, 805440), (320, 785304), (360, 698048), (384, 654420), (390, 644352), (416, 604080), (468, 536960), (480, 523536), (512, 490815), (520, 483264), (576, 436280), (585, 429568), (624, 402720), (640, 392652), (720, 349024), (768, 327210), (780, 322176), (832, 302040), (839, 299520), (936, 268480), (960, 261768), (1040, 241632), (1152, 218140), (1170, 214784), (1248, 201360), (1280, 196326), (1440, 174512), (1536, 163605), (1560, 161088), (1664, 151020), (1678, 149760), (1872, 134240), (1920, 130884), (2080, 120816), (2304, 109070), (2340, 107392), (2496, 100680), (2517, 99840), (2560, 98163), (2880, 87256), (3120, 80544), (3328, 75510), (3356, 74880), (3744, 67120), (3840, 65442), (4160, 60408), (4195, 59904), (4608, 54535), (4680, 53696), (4992, 50340), (5034, 49920), (5760, 43628), (6240, 40272), (6656, 37755), (6712, 37440), (7488, 33560), (7551, 33280), (7680, 32721), (8320, 30204), (8390, 29952), (9360, 26848), (9984, 25170), (10068, 24960), (10907, 23040), (11520, 21814), (12480, 20136), (12585, 19968), (13424, 18720), (14976, 16780), (15102, 16640)]