19947213

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1409}}^1$

素因数の和:1450

約数の個数: 36

約数和(自身を含む): 34130460

約数和(自身を除く): 14183247

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 121, 143, 363, 429, 1089, 1287, 1409, 1573, 4227, 4719, 12681, 14157, 15499, 18317, 46497, 54951, 139491, 164853, 170489, 201487, 511467, 604461, 1534401, 1813383, 2216357, 6649071, 19947213]

約数ペア:

[(1, 19947213), (3, 6649071), (9, 2216357), (11, 1813383), (13, 1534401), (33, 604461), (39, 511467), (99, 201487), (117, 170489), (121, 164853), (143, 139491), (363, 54951), (429, 46497), (1089, 18317), (1287, 15499), (1409, 14157), (1573, 12681), (4227, 4719)]