18728787

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{81077}}^1$

素因数の和:81098

約数の個数: 16

約数和(自身を含む): 31133952

約数和(自身を除く): 12405165

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 81077, 243231, 567539, 891847, 1702617, 2675541, 6242929, 18728787]

約数ペア:

[(1, 18728787), (3, 6242929), (7, 2675541), (11, 1702617), (21, 891847), (33, 567539), (77, 243231), (231, 81077)]