19581309

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{17981}}^1$

素因数の和:18009

約数の個数: 18

約数和(自身を含む): 31090878

約数和(自身を除く): 11509569

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 17981, 53943, 161829, 197791, 593373, 1780119, 2175701, 6527103, 19581309]

約数ペア:

[(1, 19581309), (3, 6527103), (9, 2175701), (11, 1780119), (33, 593373), (99, 197791), (121, 161829), (363, 53943), (1089, 17981)]