19810371

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^2\times {\mathrm{271}}^1$

素因数の和:399

約数の個数: 24

約数和(自身を含む): 30820864

約数和(自身を除く): 11010493

約数列:

[1, 3, 7, 21, 59, 177, 271, 413, 813, 1239, 1897, 3481, 5691, 10443, 15989, 24367, 47967, 73101, 111923, 335769, 943351, 2830053, 6603457, 19810371]

約数ペア:

[(1, 19810371), (3, 6603457), (7, 2830053), (21, 943351), (59, 335769), (177, 111923), (271, 73101), (413, 47967), (813, 24367), (1239, 15989), (1897, 10443), (3481, 5691)]