20806227

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19759}}^1$

素因数の和:19784

約数の個数: 20

約数和(自身を含む): 33473440

約数和(自身を除く): 12667213

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 19759, 59277, 177831, 256867, 533493, 770601, 1600479, 2311803, 6935409, 20806227]

約数ペア:

[(1, 20806227), (3, 6935409), (9, 2311803), (13, 1600479), (27, 770601), (39, 533493), (81, 256867), (117, 177831), (351, 59277), (1053, 19759)]