21059808

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1$

素因数の和:86

約数の個数: 216

約数和(自身を含む): 72595656

約数和(自身を除く): 51535848

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 24, 28, 32, 33, 37, 42, 44, 48, 49, 56, 66, 74, 77, 84, 88, 96, 98, 111, 112, 121, 132, 147, 148, 154, 168, 176, 196, 222, 224, 231, 242, 259, 264, 294, 296, 308, 336, 352, 363, 392, 407, 444, 462, 484, 518, 528, 539, 588, 592, 616, 672, 726, 777, 784, 814, 847, 888, 924, 968, 1036, 1056, 1078, 1176, 1184, 1221, 1232, 1452, 1554, 1568, 1617, 1628, 1694, 1776, 1813, 1848, 1936, 2072, 2156, 2352, 2442, 2464, 2541, 2849, 2904, 3108, 3234, 3256, 3388, 3552, 3626, 3696, 3872, 4144, 4312, 4477, 4704, 4884, 5082, 5439, 5698, 5808, 5929, 6216, 6468, 6512, 6776, 7252, 7392, 8288, 8547, 8624, 8954, 9768, 10164, 10878, 11396, 11616, 11858, 12432, 12936, 13024, 13431, 13552, 14504, 17094, 17248, 17787, 17908, 19536, 19943, 20328, 21756, 22792, 23716, 24864, 25872, 26862, 27104, 29008, 31339, 34188, 35574, 35816, 39072, 39886, 40656, 43512, 45584, 47432, 51744, 53724, 58016, 59829, 62678, 68376, 71148, 71632, 79772, 81312, 87024, 91168, 94017, 94864, 107448, 119658, 125356, 136752, 142296, 143264, 159544, 174048, 188034, 189728, 214896, 219373, 239316, 250712, 273504, 284592, 319088, 376068, 429792, 438746, 478632, 501424, 569184, 638176, 658119, 752136, 877492, 957264, 1002848, 1316238, 1504272, 1754984, 1914528, 2632476, 3008544, 3509968, 5264952, 7019936, 10529904, 21059808]

約数ペア:

[(1, 21059808), (2, 10529904), (3, 7019936), (4, 5264952), (6, 3509968), (7, 3008544), (8, 2632476), (11, 1914528), (12, 1754984), (14, 1504272), (16, 1316238), (21, 1002848), (22, 957264), (24, 877492), (28, 752136), (32, 658119), (33, 638176), (37, 569184), (42, 501424), (44, 478632), (48, 438746), (49, 429792), (56, 376068), (66, 319088), (74, 284592), (77, 273504), (84, 250712), (88, 239316), (96, 219373), (98, 214896), (111, 189728), (112, 188034), (121, 174048), (132, 159544), (147, 143264), (148, 142296), (154, 136752), (168, 125356), (176, 119658), (196, 107448), (222, 94864), (224, 94017), (231, 91168), (242, 87024), (259, 81312), (264, 79772), (294, 71632), (296, 71148), (308, 68376), (336, 62678), (352, 59829), (363, 58016), (392, 53724), (407, 51744), (444, 47432), (462, 45584), (484, 43512), (518, 40656), (528, 39886), (539, 39072), (588, 35816), (592, 35574), (616, 34188), (672, 31339), (726, 29008), (777, 27104), (784, 26862), (814, 25872), (847, 24864), (888, 23716), (924, 22792), (968, 21756), (1036, 20328), (1056, 19943), (1078, 19536), (1176, 17908), (1184, 17787), (1221, 17248), (1232, 17094), (1452, 14504), (1554, 13552), (1568, 13431), (1617, 13024), (1628, 12936), (1694, 12432), (1776, 11858), (1813, 11616), (1848, 11396), (1936, 10878), (2072, 10164), (2156, 9768), (2352, 8954), (2442, 8624), (2464, 8547), (2541, 8288), (2849, 7392), (2904, 7252), (3108, 6776), (3234, 6512), (3256, 6468), (3388, 6216), (3552, 5929), (3626, 5808), (3696, 5698), (3872, 5439), (4144, 5082), (4312, 4884), (4477, 4704)]