20781771

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{2269}}^1$

素因数の和:2386

約数の個数: 16

約数和(自身を含む): 28765440

約数和(自身を除く): 7983669

約数列:

[1, 3, 43, 71, 129, 213, 2269, 3053, 6807, 9159, 97567, 161099, 292701, 483297, 6927257, 20781771]

約数ペア:

[(1, 20781771), (3, 6927257), (43, 483297), (71, 292701), (129, 161099), (213, 97567), (2269, 9159), (3053, 6807)]