21561111

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1523}}^1$

素因数の和:1564

約数の個数: 36

約数和(自身を含む): 36889944

約数和(自身を除く): 15328833

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 121, 143, 363, 429, 1089, 1287, 1523, 1573, 4569, 4719, 13707, 14157, 16753, 19799, 50259, 59397, 150777, 178191, 184283, 217789, 552849, 653367, 1658547, 1960101, 2395679, 7187037, 21561111]

約数ペア:

[(1, 21561111), (3, 7187037), (9, 2395679), (11, 1960101), (13, 1658547), (33, 653367), (39, 552849), (99, 217789), (117, 184283), (121, 178191), (143, 150777), (363, 59397), (429, 50259), (1089, 19799), (1287, 16753), (1523, 14157), (1573, 13707), (4569, 4719)]