19785073

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:154

約数の個数: 36

約数和(自身を含む): 26199936

約数和(自身を除く): 6414863

約数列:

[1, 7, 11, 47, 49, 71, 77, 121, 329, 497, 517, 539, 781, 847, 2303, 3337, 3479, 3619, 5467, 5687, 5929, 8591, 23359, 25333, 36707, 38269, 39809, 60137, 163513, 256949, 278663, 403777, 420959, 1798643, 2826439, 19785073]

約数ペア:

[(1, 19785073), (7, 2826439), (11, 1798643), (47, 420959), (49, 403777), (71, 278663), (77, 256949), (121, 163513), (329, 60137), (497, 39809), (517, 38269), (539, 36707), (781, 25333), (847, 23359), (2303, 8591), (3337, 5929), (3479, 5687), (3619, 5467)]