20494221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{8747}}^1$

素因数の和:8832

約数の個数: 16

約数和(自身を含む): 30233088

約数和(自身を除く): 9738867

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 8747, 26241, 96217, 288651, 621037, 1863111, 6831407, 20494221]

約数ペア:

[(1, 20494221), (3, 6831407), (11, 1863111), (33, 621037), (71, 288651), (213, 96217), (781, 26241), (2343, 8747)]