20680128

素因数分解:

$2^6\times 3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:271

約数の個数: 168

約数和(自身を含む): 71006208

約数和(自身を除く): 50326080

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 23, 24, 28, 32, 36, 42, 46, 48, 56, 63, 64, 69, 72, 84, 92, 96, 112, 126, 138, 144, 161, 168, 184, 192, 207, 223, 224, 252, 276, 288, 322, 336, 368, 414, 446, 448, 483, 504, 552, 576, 644, 669, 672, 736, 828, 892, 966, 1008, 1104, 1288, 1338, 1344, 1449, 1472, 1561, 1656, 1784, 1932, 2007, 2016, 2208, 2576, 2676, 2898, 3122, 3312, 3568, 3864, 4014, 4032, 4416, 4683, 5129, 5152, 5352, 5796, 6244, 6624, 7136, 7728, 8028, 9366, 10258, 10304, 10704, 11592, 12488, 13248, 14049, 14272, 15387, 15456, 16056, 18732, 20516, 21408, 23184, 24976, 28098, 30774, 30912, 32112, 35903, 37464, 41032, 42816, 46161, 46368, 49952, 56196, 61548, 64224, 71806, 74928, 82064, 92322, 92736, 99904, 107709, 112392, 123096, 128448, 143612, 149856, 164128, 184644, 215418, 224784, 246192, 287224, 299712, 323127, 328256, 369288, 430836, 449568, 492384, 574448, 646254, 738576, 861672, 899136, 984768, 1148896, 1292508, 1477152, 1723344, 2297792, 2585016, 2954304, 3446688, 5170032, 6893376, 10340064, 20680128]

約数ペア:

[(1, 20680128), (2, 10340064), (3, 6893376), (4, 5170032), (6, 3446688), (7, 2954304), (8, 2585016), (9, 2297792), (12, 1723344), (14, 1477152), (16, 1292508), (18, 1148896), (21, 984768), (23, 899136), (24, 861672), (28, 738576), (32, 646254), (36, 574448), (42, 492384), (46, 449568), (48, 430836), (56, 369288), (63, 328256), (64, 323127), (69, 299712), (72, 287224), (84, 246192), (92, 224784), (96, 215418), (112, 184644), (126, 164128), (138, 149856), (144, 143612), (161, 128448), (168, 123096), (184, 112392), (192, 107709), (207, 99904), (223, 92736), (224, 92322), (252, 82064), (276, 74928), (288, 71806), (322, 64224), (336, 61548), (368, 56196), (414, 49952), (446, 46368), (448, 46161), (483, 42816), (504, 41032), (552, 37464), (576, 35903), (644, 32112), (669, 30912), (672, 30774), (736, 28098), (828, 24976), (892, 23184), (966, 21408), (1008, 20516), (1104, 18732), (1288, 16056), (1338, 15456), (1344, 15387), (1449, 14272), (1472, 14049), (1561, 13248), (1656, 12488), (1784, 11592), (1932, 10704), (2007, 10304), (2016, 10258), (2208, 9366), (2576, 8028), (2676, 7728), (2898, 7136), (3122, 6624), (3312, 6244), (3568, 5796), (3864, 5352), (4014, 5152), (4032, 5129), (4416, 4683)]