20972193

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{8951}}^1$

素因数の和:9036

約数の個数: 16

約数和(自身を含む): 30938112

約数和(自身を除く): 9965919

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 8951, 26853, 98461, 295383, 635521, 1906563, 6990731, 20972193]

約数ペア:

[(1, 20972193), (3, 6990731), (11, 1906563), (33, 635521), (71, 295383), (213, 98461), (781, 26853), (2343, 8951)]