257287680

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{859}}^1$

素因数の和:901

約数の個数: 240

約数和(自身を含む): 960719760

約数和(自身を除く): 703432080

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, 859, 936, 960, 1040, 1152, 1170, 1248, 1280, 1440, 1536, 1560, 1664, 1718, 1872, 1920, 2080, 2304, 2340, 2496, 2560, 2577, 2880, 3120, 3328, 3436, 3744, 3840, 4160, 4295, 4608, 4680, 4992, 5154, 5760, 6240, 6656, 6872, 7488, 7680, 7731, 8320, 8590, 9360, 9984, 10308, 11167, 11520, 12480, 12885, 13744, 14976, 15462, 16640, 17180, 18720, 19968, 20616, 22334, 23040, 24960, 25770, 27488, 29952, 30924, 33280, 33501, 34360, 37440, 38655, 41232, 44668, 49920, 51540, 54976, 55835, 59904, 61848, 67002, 68720, 74880, 77310, 82464, 89336, 99840, 100503, 103080, 109952, 111670, 123696, 134004, 137440, 149760, 154620, 164928, 167505, 178672, 201006, 206160, 219904, 223340, 247392, 268008, 274880, 299520, 309240, 329856, 335010, 357344, 402012, 412320, 439808, 446680, 494784, 502515, 536016, 549760, 618480, 659712, 670020, 714688, 804024, 824640, 893360, 989568, 1005030, 1072032, 1099520, 1236960, 1319424, 1340040, 1429376, 1608048, 1649280, 1786720, 1979136, 2010060, 2144064, 2199040, 2473920, 2680080, 2858752, 3216096, 3298560, 3573440, 3958272, 4020120, 4288128, 4947840, 5360160, 5717504, 6432192, 6597120, 7146880, 8040240, 8576256, 9895680, 10720320, 12864384, 14293760, 16080480, 17152512, 19791360, 21440640, 25728768, 28587520, 32160960, 42881280, 51457536, 64321920, 85762560, 128643840, 257287680]

約数ペア:

[(1, 257287680), (2, 128643840), (3, 85762560), (4, 64321920), (5, 51457536), (6, 42881280), (8, 32160960), (9, 28587520), (10, 25728768), (12, 21440640), (13, 19791360), (15, 17152512), (16, 16080480), (18, 14293760), (20, 12864384), (24, 10720320), (26, 9895680), (30, 8576256), (32, 8040240), (36, 7146880), (39, 6597120), (40, 6432192), (45, 5717504), (48, 5360160), (52, 4947840), (60, 4288128), (64, 4020120), (65, 3958272), (72, 3573440), (78, 3298560), (80, 3216096), (90, 2858752), (96, 2680080), (104, 2473920), (117, 2199040), (120, 2144064), (128, 2010060), (130, 1979136), (144, 1786720), (156, 1649280), (160, 1608048), (180, 1429376), (192, 1340040), (195, 1319424), (208, 1236960), (234, 1099520), (240, 1072032), (256, 1005030), (260, 989568), (288, 893360), (312, 824640), (320, 804024), (360, 714688), (384, 670020), (390, 659712), (416, 618480), (468, 549760), (480, 536016), (512, 502515), (520, 494784), (576, 446680), (585, 439808), (624, 412320), (640, 402012), (720, 357344), (768, 335010), (780, 329856), (832, 309240), (859, 299520), (936, 274880), (960, 268008), (1040, 247392), (1152, 223340), (1170, 219904), (1248, 206160), (1280, 201006), (1440, 178672), (1536, 167505), (1560, 164928), (1664, 154620), (1718, 149760), (1872, 137440), (1920, 134004), (2080, 123696), (2304, 111670), (2340, 109952), (2496, 103080), (2560, 100503), (2577, 99840), (2880, 89336), (3120, 82464), (3328, 77310), (3436, 74880), (3744, 68720), (3840, 67002), (4160, 61848), (4295, 59904), (4608, 55835), (4680, 54976), (4992, 51540), (5154, 49920), (5760, 44668), (6240, 41232), (6656, 38655), (6872, 37440), (7488, 34360), (7680, 33501), (7731, 33280), (8320, 30924), (8590, 29952), (9360, 27488), (9984, 25770), (10308, 24960), (11167, 23040), (11520, 22334), (12480, 20616), (12885, 19968), (13744, 18720), (14976, 17180), (15462, 16640)]