21608613

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20521}}^1$

素因数の和:20546

約数の個数: 20

約数和(自身を含む): 34764268

約数和(自身を除く): 13155655

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20521, 61563, 184689, 266773, 554067, 800319, 1662201, 2400957, 7202871, 21608613]

約数ペア:

[(1, 21608613), (3, 7202871), (9, 2400957), (13, 1662201), (27, 800319), (39, 554067), (81, 266773), (117, 184689), (351, 61563), (1053, 20521)]