18720933

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{81043}}^1$

素因数の和:81064

約数の個数: 16

約数和(自身を含む): 31120896

約数和(自身を除く): 12399963

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 81043, 243129, 567301, 891473, 1701903, 2674419, 6240311, 18720933]

約数ペア:

[(1, 18720933), (3, 6240311), (7, 2674419), (11, 1701903), (21, 891473), (33, 567301), (77, 243129), (231, 81043)]