28293309

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{25981}}^1$

素因数の和:26009

約数の個数: 18

約数和(自身を含む): 44922878

約数和(自身を除く): 16629569

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 25981, 77943, 233829, 285791, 857373, 2572119, 3143701, 9431103, 28293309]

約数ペア:

[(1, 28293309), (3, 9431103), (9, 3143701), (11, 2572119), (33, 857373), (99, 285791), (121, 233829), (363, 77943), (1089, 25981)]