261321984

素因数分解:

$2^8\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1$

素因数の和:534

約数の個数: 288

約数和(自身を含む): 965422080

約数和(自身を除く): 704100096

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 21, 22, 24, 27, 28, 32, 33, 36, 42, 44, 48, 54, 56, 63, 64, 66, 72, 77, 84, 88, 96, 99, 108, 112, 126, 128, 132, 144, 154, 168, 176, 189, 192, 198, 216, 224, 231, 252, 256, 264, 288, 297, 308, 336, 352, 378, 384, 396, 432, 448, 462, 491, 504, 528, 576, 594, 616, 672, 693, 704, 756, 768, 792, 864, 896, 924, 982, 1008, 1056, 1152, 1188, 1232, 1344, 1386, 1408, 1473, 1512, 1584, 1728, 1792, 1848, 1964, 2016, 2079, 2112, 2304, 2376, 2464, 2688, 2772, 2816, 2946, 3024, 3168, 3437, 3456, 3696, 3928, 4032, 4158, 4224, 4419, 4752, 4928, 5376, 5401, 5544, 5892, 6048, 6336, 6874, 6912, 7392, 7856, 8064, 8316, 8448, 8838, 9504, 9856, 10311, 10802, 11088, 11784, 12096, 12672, 13257, 13748, 14784, 15712, 16128, 16203, 16632, 17676, 19008, 19712, 20622, 21604, 22176, 23568, 24192, 25344, 26514, 27496, 29568, 30933, 31424, 32406, 33264, 35352, 37807, 38016, 41244, 43208, 44352, 47136, 48384, 48609, 53028, 54992, 59136, 61866, 62848, 64812, 66528, 70704, 75614, 76032, 82488, 86416, 88704, 92799, 94272, 97218, 106056, 109984, 113421, 123732, 125696, 129624, 133056, 141408, 145827, 151228, 164976, 172832, 177408, 185598, 188544, 194436, 212112, 219968, 226842, 247464, 259248, 266112, 282816, 291654, 302456, 329952, 340263, 345664, 371196, 377088, 388872, 424224, 439936, 453684, 494928, 518496, 532224, 565632, 583308, 604912, 659904, 680526, 691328, 742392, 777744, 848448, 879872, 907368, 989856, 1020789, 1036992, 1131264, 1166616, 1209824, 1319808, 1361052, 1382656, 1484784, 1555488, 1696896, 1814736, 1979712, 2041578, 2073984, 2333232, 2419648, 2639616, 2722104, 2969568, 3110976, 3393792, 3629472, 3959424, 4083156, 4147968, 4666464, 4839296, 5444208, 5939136, 6221952, 7258944, 7918848, 8166312, 9332928, 9678592, 10888416, 11878272, 12443904, 14517888, 16332624, 18665856, 21776832, 23756544, 29035776, 32665248, 37331712, 43553664, 65330496, 87107328, 130660992, 261321984]

約数ペア:

[(1, 261321984), (2, 130660992), (3, 87107328), (4, 65330496), (6, 43553664), (7, 37331712), (8, 32665248), (9, 29035776), (11, 23756544), (12, 21776832), (14, 18665856), (16, 16332624), (18, 14517888), (21, 12443904), (22, 11878272), (24, 10888416), (27, 9678592), (28, 9332928), (32, 8166312), (33, 7918848), (36, 7258944), (42, 6221952), (44, 5939136), (48, 5444208), (54, 4839296), (56, 4666464), (63, 4147968), (64, 4083156), (66, 3959424), (72, 3629472), (77, 3393792), (84, 3110976), (88, 2969568), (96, 2722104), (99, 2639616), (108, 2419648), (112, 2333232), (126, 2073984), (128, 2041578), (132, 1979712), (144, 1814736), (154, 1696896), (168, 1555488), (176, 1484784), (189, 1382656), (192, 1361052), (198, 1319808), (216, 1209824), (224, 1166616), (231, 1131264), (252, 1036992), (256, 1020789), (264, 989856), (288, 907368), (297, 879872), (308, 848448), (336, 777744), (352, 742392), (378, 691328), (384, 680526), (396, 659904), (432, 604912), (448, 583308), (462, 565632), (491, 532224), (504, 518496), (528, 494928), (576, 453684), (594, 439936), (616, 424224), (672, 388872), (693, 377088), (704, 371196), (756, 345664), (768, 340263), (792, 329952), (864, 302456), (896, 291654), (924, 282816), (982, 266112), (1008, 259248), (1056, 247464), (1152, 226842), (1188, 219968), (1232, 212112), (1344, 194436), (1386, 188544), (1408, 185598), (1473, 177408), (1512, 172832), (1584, 164976), (1728, 151228), (1792, 145827), (1848, 141408), (1964, 133056), (2016, 129624), (2079, 125696), (2112, 123732), (2304, 113421), (2376, 109984), (2464, 106056), (2688, 97218), (2772, 94272), (2816, 92799), (2946, 88704), (3024, 86416), (3168, 82488), (3437, 76032), (3456, 75614), (3696, 70704), (3928, 66528), (4032, 64812), (4158, 62848), (4224, 61866), (4419, 59136), (4752, 54992), (4928, 53028), (5376, 48609), (5401, 48384), (5544, 47136), (5892, 44352), (6048, 43208), (6336, 41244), (6874, 38016), (6912, 37807), (7392, 35352), (7856, 33264), (8064, 32406), (8316, 31424), (8448, 30933), (8838, 29568), (9504, 27496), (9856, 26514), (10311, 25344), (10802, 24192), (11088, 23568), (11784, 22176), (12096, 21604), (12672, 20622), (13257, 19712), (13748, 19008), (14784, 17676), (15712, 16632), (16128, 16203)]