21056784

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2161}}^1$

素因数の和:2208

約数の個数: 80

約数和(自身を含む): 64341120

約数和(自身を除く): 43284336

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 29, 42, 48, 56, 58, 84, 87, 112, 116, 168, 174, 203, 232, 336, 348, 406, 464, 609, 696, 812, 1218, 1392, 1624, 2161, 2436, 3248, 4322, 4872, 6483, 8644, 9744, 12966, 15127, 17288, 25932, 30254, 34576, 45381, 51864, 60508, 62669, 90762, 103728, 121016, 125338, 181524, 188007, 242032, 250676, 363048, 376014, 438683, 501352, 726096, 752028, 877366, 1002704, 1316049, 1504056, 1754732, 2632098, 3008112, 3509464, 5264196, 7018928, 10528392, 21056784]

約数ペア:

[(1, 21056784), (2, 10528392), (3, 7018928), (4, 5264196), (6, 3509464), (7, 3008112), (8, 2632098), (12, 1754732), (14, 1504056), (16, 1316049), (21, 1002704), (24, 877366), (28, 752028), (29, 726096), (42, 501352), (48, 438683), (56, 376014), (58, 363048), (84, 250676), (87, 242032), (112, 188007), (116, 181524), (168, 125338), (174, 121016), (203, 103728), (232, 90762), (336, 62669), (348, 60508), (406, 51864), (464, 45381), (609, 34576), (696, 30254), (812, 25932), (1218, 17288), (1392, 15127), (1624, 12966), (2161, 9744), (2436, 8644), (3248, 6483), (4322, 4872)]