20905767

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1277}}^1$

素因数の和:1407

約数の個数: 24

約数和(自身を含む): 32297616

約数和(自身を除く): 11391849

約数列:

[1, 3, 9, 17, 51, 107, 153, 321, 963, 1277, 1819, 3831, 5457, 11493, 16371, 21709, 65127, 136639, 195381, 409917, 1229751, 2322863, 6968589, 20905767]

約数ペア:

[(1, 20905767), (3, 6968589), (9, 2322863), (17, 1229751), (51, 409917), (107, 195381), (153, 136639), (321, 65127), (963, 21709), (1277, 16371), (1819, 11493), (3831, 5457)]