21221343

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1499}}^1$

素因数の和:1540

約数の個数: 36

約数和(自身を含む): 36309000

約数和(自身を除く): 15087657

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 121, 143, 363, 429, 1089, 1287, 1499, 1573, 4497, 4719, 13491, 14157, 16489, 19487, 49467, 58461, 148401, 175383, 181379, 214357, 544137, 643071, 1632411, 1929213, 2357927, 7073781, 21221343]

約数ペア:

[(1, 21221343), (3, 7073781), (9, 2357927), (11, 1929213), (13, 1632411), (33, 643071), (39, 544137), (99, 214357), (117, 181379), (121, 175383), (143, 148401), (363, 58461), (429, 49467), (1089, 19487), (1287, 16489), (1499, 14157), (1573, 13491), (4497, 4719)]