21355983

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 14496561

約数列:

[1, 3, 9, 11, 23, 33, 69, 83, 99, 113, 207, 249, 253, 339, 747, 759, 913, 1017, 1243, 1909, 2277, 2599, 2739, 3729, 5727, 7797, 8217, 9379, 11187, 17181, 20999, 23391, 28137, 28589, 62997, 84411, 85767, 103169, 188991, 215717, 257301, 309507, 647151, 928521, 1941453, 2372887, 7118661, 21355983]

約数ペア:

[(1, 21355983), (3, 7118661), (9, 2372887), (11, 1941453), (23, 928521), (33, 647151), (69, 309507), (83, 257301), (99, 215717), (113, 188991), (207, 103169), (249, 85767), (253, 84411), (339, 62997), (747, 28589), (759, 28137), (913, 23391), (1017, 20999), (1243, 17181), (1909, 11187), (2277, 9379), (2599, 8217), (2739, 7797), (3729, 5727)]