17720937

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{16829}}^1$

素因数の和:16854

約数の個数: 20

約数和(自身を含む): 28510020

約数和(自身を除く): 10789083

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 16829, 50487, 151461, 218777, 454383, 656331, 1363149, 1968993, 5906979, 17720937]

約数ペア:

[(1, 17720937), (3, 5906979), (9, 1968993), (13, 1363149), (27, 656331), (39, 454383), (81, 218777), (117, 151461), (351, 50487), (1053, 16829)]