12945359

素因数分解:

$7^2\times {\mathrm{61}}^2\times {\mathrm{71}}^1$

素因数の和:207

約数の個数: 18

約数和(自身を含む): 15525432

約数和(自身を除く): 2580073

約数列:

[1, 7, 49, 61, 71, 427, 497, 2989, 3479, 3721, 4331, 26047, 30317, 182329, 212219, 264191, 1849337, 12945359]

約数ペア:

[(1, 12945359), (7, 1849337), (49, 264191), (61, 212219), (71, 182329), (427, 30317), (497, 26047), (2989, 4331), (3479, 3721)]