19931191

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1$

素因数の和:439

約数の個数: 24

約数和(自身を含む): 24968736

約数和(自身を除く): 5037545

約数列:

[1, 7, 17, 49, 71, 119, 337, 497, 833, 1207, 2359, 3479, 5729, 8449, 16513, 23927, 40103, 59143, 167489, 280721, 406759, 1172423, 2847313, 19931191]

約数ペア:

[(1, 19931191), (7, 2847313), (17, 1172423), (49, 406759), (71, 280721), (119, 167489), (337, 59143), (497, 40103), (833, 23927), (1207, 16513), (2359, 8449), (3479, 5729)]