20988807

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{2011}}^1$

素因数の和:2099

約数の個数: 24

約数和(自身を含む): 33028992

約数和(自身を除く): 12040185

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 2011, 3479, 6033, 10437, 14077, 42231, 98539, 142781, 295617, 428343, 999467, 2998401, 6996269, 20988807]

約数ペア:

[(1, 20988807), (3, 6996269), (7, 2998401), (21, 999467), (49, 428343), (71, 295617), (147, 142781), (213, 98539), (497, 42231), (1491, 14077), (2011, 10437), (3479, 6033)]