20287008

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{347}}^1$

素因数の和:399

約数の個数: 144

約数和(自身を含む): 68402880

約数和(自身を除く): 48115872

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 29, 32, 36, 42, 48, 56, 58, 63, 72, 84, 87, 96, 112, 116, 126, 144, 168, 174, 203, 224, 232, 252, 261, 288, 336, 347, 348, 406, 464, 504, 522, 609, 672, 694, 696, 812, 928, 1008, 1041, 1044, 1218, 1388, 1392, 1624, 1827, 2016, 2082, 2088, 2429, 2436, 2776, 2784, 3123, 3248, 3654, 4164, 4176, 4858, 4872, 5552, 6246, 6496, 7287, 7308, 8328, 8352, 9716, 9744, 10063, 11104, 12492, 14574, 14616, 16656, 19432, 19488, 20126, 21861, 24984, 29148, 29232, 30189, 33312, 38864, 40252, 43722, 49968, 58296, 58464, 60378, 70441, 77728, 80504, 87444, 90567, 99936, 116592, 120756, 140882, 161008, 174888, 181134, 211323, 233184, 241512, 281764, 322016, 349776, 362268, 422646, 483024, 563528, 633969, 699552, 724536, 845292, 966048, 1127056, 1267938, 1449072, 1690584, 2254112, 2535876, 2898144, 3381168, 5071752, 6762336, 10143504, 20287008]

約数ペア:

[(1, 20287008), (2, 10143504), (3, 6762336), (4, 5071752), (6, 3381168), (7, 2898144), (8, 2535876), (9, 2254112), (12, 1690584), (14, 1449072), (16, 1267938), (18, 1127056), (21, 966048), (24, 845292), (28, 724536), (29, 699552), (32, 633969), (36, 563528), (42, 483024), (48, 422646), (56, 362268), (58, 349776), (63, 322016), (72, 281764), (84, 241512), (87, 233184), (96, 211323), (112, 181134), (116, 174888), (126, 161008), (144, 140882), (168, 120756), (174, 116592), (203, 99936), (224, 90567), (232, 87444), (252, 80504), (261, 77728), (288, 70441), (336, 60378), (347, 58464), (348, 58296), (406, 49968), (464, 43722), (504, 40252), (522, 38864), (609, 33312), (672, 30189), (694, 29232), (696, 29148), (812, 24984), (928, 21861), (1008, 20126), (1041, 19488), (1044, 19432), (1218, 16656), (1388, 14616), (1392, 14574), (1624, 12492), (1827, 11104), (2016, 10063), (2082, 9744), (2088, 9716), (2429, 8352), (2436, 8328), (2776, 7308), (2784, 7287), (3123, 6496), (3248, 6246), (3654, 5552), (4164, 4872), (4176, 4858)]