20808964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6661}}^1$

素因数の和:6747

約数の個数: 24

約数和(自身を含む): 40291776

約数和(自身を除く): 19482812

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6661, 13322, 26644, 73271, 146542, 293084, 472931, 945862, 1891724, 5202241, 10404482, 20808964]

約数ペア:

[(1, 20808964), (2, 10404482), (4, 5202241), (11, 1891724), (22, 945862), (44, 472931), (71, 293084), (142, 146542), (284, 73271), (781, 26644), (1562, 13322), (3124, 6661)]