21081984

素因数分解:

$2^7\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:89

約数の個数: 256

約数和(自身を含む): 75202560

約数和(自身を除く): 54120576

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 23, 24, 28, 31, 32, 33, 42, 44, 46, 48, 56, 62, 64, 66, 69, 77, 84, 88, 92, 93, 96, 112, 124, 128, 132, 138, 154, 161, 168, 176, 184, 186, 192, 217, 224, 231, 248, 253, 264, 276, 308, 322, 336, 341, 352, 368, 372, 384, 434, 448, 462, 483, 496, 506, 528, 552, 616, 644, 651, 672, 682, 704, 713, 736, 744, 759, 868, 896, 924, 966, 992, 1012, 1023, 1056, 1104, 1232, 1288, 1302, 1344, 1364, 1408, 1426, 1472, 1488, 1518, 1736, 1771, 1848, 1932, 1984, 2024, 2046, 2112, 2139, 2208, 2387, 2464, 2576, 2604, 2688, 2728, 2852, 2944, 2976, 3036, 3472, 3542, 3696, 3864, 3968, 4048, 4092, 4224, 4278, 4416, 4774, 4928, 4991, 5152, 5208, 5313, 5456, 5704, 5952, 6072, 6944, 7084, 7161, 7392, 7728, 7843, 8096, 8184, 8556, 8832, 9548, 9856, 9982, 10304, 10416, 10626, 10912, 11408, 11904, 12144, 13888, 14168, 14322, 14784, 14973, 15456, 15686, 16192, 16368, 17112, 19096, 19964, 20608, 20832, 21252, 21824, 22816, 23529, 24288, 27776, 28336, 28644, 29568, 29946, 30912, 31372, 32384, 32736, 34224, 38192, 39928, 41664, 42504, 43648, 45632, 47058, 48576, 54901, 56672, 57288, 59892, 61824, 62744, 65472, 68448, 76384, 79856, 83328, 85008, 91264, 94116, 97152, 109802, 113344, 114576, 119784, 125488, 130944, 136896, 152768, 159712, 164703, 170016, 188232, 219604, 226688, 229152, 239568, 250976, 273792, 305536, 319424, 329406, 340032, 376464, 439208, 458304, 479136, 501952, 638848, 658812, 680064, 752928, 878416, 916608, 958272, 1003904, 1317624, 1505856, 1756832, 1916544, 2635248, 3011712, 3513664, 5270496, 7027328, 10540992, 21081984]

約数ペア:

[(1, 21081984), (2, 10540992), (3, 7027328), (4, 5270496), (6, 3513664), (7, 3011712), (8, 2635248), (11, 1916544), (12, 1756832), (14, 1505856), (16, 1317624), (21, 1003904), (22, 958272), (23, 916608), (24, 878416), (28, 752928), (31, 680064), (32, 658812), (33, 638848), (42, 501952), (44, 479136), (46, 458304), (48, 439208), (56, 376464), (62, 340032), (64, 329406), (66, 319424), (69, 305536), (77, 273792), (84, 250976), (88, 239568), (92, 229152), (93, 226688), (96, 219604), (112, 188232), (124, 170016), (128, 164703), (132, 159712), (138, 152768), (154, 136896), (161, 130944), (168, 125488), (176, 119784), (184, 114576), (186, 113344), (192, 109802), (217, 97152), (224, 94116), (231, 91264), (248, 85008), (253, 83328), (264, 79856), (276, 76384), (308, 68448), (322, 65472), (336, 62744), (341, 61824), (352, 59892), (368, 57288), (372, 56672), (384, 54901), (434, 48576), (448, 47058), (462, 45632), (483, 43648), (496, 42504), (506, 41664), (528, 39928), (552, 38192), (616, 34224), (644, 32736), (651, 32384), (672, 31372), (682, 30912), (704, 29946), (713, 29568), (736, 28644), (744, 28336), (759, 27776), (868, 24288), (896, 23529), (924, 22816), (966, 21824), (992, 21252), (1012, 20832), (1023, 20608), (1056, 19964), (1104, 19096), (1232, 17112), (1288, 16368), (1302, 16192), (1344, 15686), (1364, 15456), (1408, 14973), (1426, 14784), (1472, 14322), (1488, 14168), (1518, 13888), (1736, 12144), (1771, 11904), (1848, 11408), (1932, 10912), (1984, 10626), (2024, 10416), (2046, 10304), (2112, 9982), (2139, 9856), (2208, 9548), (2387, 8832), (2464, 8556), (2576, 8184), (2604, 8096), (2688, 7843), (2728, 7728), (2852, 7392), (2944, 7161), (2976, 7084), (3036, 6944), (3472, 6072), (3542, 5952), (3696, 5704), (3864, 5456), (3968, 5313), (4048, 5208), (4092, 5152), (4224, 4991), (4278, 4928), (4416, 4774)]