21057456

素因数分解:

$2^4\times 3^1\times 7^3\times {\mathrm{1279}}^1$

素因数の和:1311

約数の個数: 80

約数和(自身を含む): 63488000

約数和(自身を除く): 42430544

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 49, 56, 84, 98, 112, 147, 168, 196, 294, 336, 343, 392, 588, 686, 784, 1029, 1176, 1279, 1372, 2058, 2352, 2558, 2744, 3837, 4116, 5116, 5488, 7674, 8232, 8953, 10232, 15348, 16464, 17906, 20464, 26859, 30696, 35812, 53718, 61392, 62671, 71624, 107436, 125342, 143248, 188013, 214872, 250684, 376026, 429744, 438697, 501368, 752052, 877394, 1002736, 1316091, 1504104, 1754788, 2632182, 3008208, 3509576, 5264364, 7019152, 10528728, 21057456]

約数ペア:

[(1, 21057456), (2, 10528728), (3, 7019152), (4, 5264364), (6, 3509576), (7, 3008208), (8, 2632182), (12, 1754788), (14, 1504104), (16, 1316091), (21, 1002736), (24, 877394), (28, 752052), (42, 501368), (48, 438697), (49, 429744), (56, 376026), (84, 250684), (98, 214872), (112, 188013), (147, 143248), (168, 125342), (196, 107436), (294, 71624), (336, 62671), (343, 61392), (392, 53718), (588, 35812), (686, 30696), (784, 26859), (1029, 20464), (1176, 17906), (1279, 16464), (1372, 15348), (2058, 10232), (2352, 8953), (2558, 8232), (2744, 7674), (3837, 5488), (4116, 5116)]