21298816

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2161}}^1$

素因数の和:2193

約数の個数: 64

約数和(自身を含む): 52925760

約数和(自身を除く): 31626944

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 128, 154, 176, 224, 308, 352, 448, 616, 704, 896, 1232, 1408, 2161, 2464, 4322, 4928, 8644, 9856, 15127, 17288, 23771, 30254, 34576, 47542, 60508, 69152, 95084, 121016, 138304, 166397, 190168, 242032, 276608, 332794, 380336, 484064, 665588, 760672, 968128, 1331176, 1521344, 1936256, 2662352, 3042688, 5324704, 10649408, 21298816]

約数ペア:

[(1, 21298816), (2, 10649408), (4, 5324704), (7, 3042688), (8, 2662352), (11, 1936256), (14, 1521344), (16, 1331176), (22, 968128), (28, 760672), (32, 665588), (44, 484064), (56, 380336), (64, 332794), (77, 276608), (88, 242032), (112, 190168), (128, 166397), (154, 138304), (176, 121016), (224, 95084), (308, 69152), (352, 60508), (448, 47542), (616, 34576), (704, 30254), (896, 23771), (1232, 17288), (1408, 15127), (2161, 9856), (2464, 8644), (4322, 4928)]