257900160

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{619}}^1$

素因数の和:679

約数の個数: 256

約数和(自身を含む): 971366400

約数和(自身を除く): 713466240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 56, 60, 62, 64, 70, 80, 84, 93, 96, 105, 112, 120, 124, 128, 140, 155, 160, 168, 186, 192, 210, 217, 224, 240, 248, 280, 310, 320, 336, 372, 384, 420, 434, 448, 465, 480, 496, 560, 619, 620, 640, 651, 672, 744, 840, 868, 896, 930, 960, 992, 1085, 1120, 1238, 1240, 1302, 1344, 1488, 1680, 1736, 1857, 1860, 1920, 1984, 2170, 2240, 2476, 2480, 2604, 2688, 2976, 3095, 3255, 3360, 3472, 3714, 3720, 3968, 4333, 4340, 4480, 4952, 4960, 5208, 5952, 6190, 6510, 6720, 6944, 7428, 7440, 8666, 8680, 9285, 9904, 9920, 10416, 11904, 12380, 12999, 13020, 13440, 13888, 14856, 14880, 17332, 17360, 18570, 19189, 19808, 19840, 20832, 21665, 24760, 25998, 26040, 27776, 29712, 29760, 34664, 34720, 37140, 38378, 39616, 41664, 43330, 49520, 51996, 52080, 57567, 59424, 59520, 64995, 69328, 69440, 74280, 76756, 79232, 83328, 86660, 95945, 99040, 103992, 104160, 115134, 118848, 129990, 134323, 138656, 138880, 148560, 153512, 173320, 191890, 198080, 207984, 208320, 230268, 237696, 259980, 268646, 277312, 287835, 297120, 307024, 346640, 383780, 396160, 402969, 415968, 416640, 460536, 519960, 537292, 554624, 575670, 594240, 614048, 671615, 693280, 767560, 805938, 831936, 921072, 1039920, 1074584, 1151340, 1188480, 1228096, 1343230, 1386560, 1535120, 1611876, 1663872, 1842144, 2014845, 2079840, 2149168, 2302680, 2456192, 2686460, 2773120, 3070240, 3223752, 3684288, 4029690, 4159680, 4298336, 4605360, 5372920, 6140480, 6447504, 7368576, 8059380, 8319360, 8596672, 9210720, 10745840, 12280960, 12895008, 16118760, 17193344, 18421440, 21491680, 25790016, 32237520, 36842880, 42983360, 51580032, 64475040, 85966720, 128950080, 257900160]

約数ペア:

[(1, 257900160), (2, 128950080), (3, 85966720), (4, 64475040), (5, 51580032), (6, 42983360), (7, 36842880), (8, 32237520), (10, 25790016), (12, 21491680), (14, 18421440), (15, 17193344), (16, 16118760), (20, 12895008), (21, 12280960), (24, 10745840), (28, 9210720), (30, 8596672), (31, 8319360), (32, 8059380), (35, 7368576), (40, 6447504), (42, 6140480), (48, 5372920), (56, 4605360), (60, 4298336), (62, 4159680), (64, 4029690), (70, 3684288), (80, 3223752), (84, 3070240), (93, 2773120), (96, 2686460), (105, 2456192), (112, 2302680), (120, 2149168), (124, 2079840), (128, 2014845), (140, 1842144), (155, 1663872), (160, 1611876), (168, 1535120), (186, 1386560), (192, 1343230), (210, 1228096), (217, 1188480), (224, 1151340), (240, 1074584), (248, 1039920), (280, 921072), (310, 831936), (320, 805938), (336, 767560), (372, 693280), (384, 671615), (420, 614048), (434, 594240), (448, 575670), (465, 554624), (480, 537292), (496, 519960), (560, 460536), (619, 416640), (620, 415968), (640, 402969), (651, 396160), (672, 383780), (744, 346640), (840, 307024), (868, 297120), (896, 287835), (930, 277312), (960, 268646), (992, 259980), (1085, 237696), (1120, 230268), (1238, 208320), (1240, 207984), (1302, 198080), (1344, 191890), (1488, 173320), (1680, 153512), (1736, 148560), (1857, 138880), (1860, 138656), (1920, 134323), (1984, 129990), (2170, 118848), (2240, 115134), (2476, 104160), (2480, 103992), (2604, 99040), (2688, 95945), (2976, 86660), (3095, 83328), (3255, 79232), (3360, 76756), (3472, 74280), (3714, 69440), (3720, 69328), (3968, 64995), (4333, 59520), (4340, 59424), (4480, 57567), (4952, 52080), (4960, 51996), (5208, 49520), (5952, 43330), (6190, 41664), (6510, 39616), (6720, 38378), (6944, 37140), (7428, 34720), (7440, 34664), (8666, 29760), (8680, 29712), (9285, 27776), (9904, 26040), (9920, 25998), (10416, 24760), (11904, 21665), (12380, 20832), (12999, 19840), (13020, 19808), (13440, 19189), (13888, 18570), (14856, 17360), (14880, 17332)]