18318717

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{11903}}^1$

素因数の和:11934

約数の個数: 20

約数和(自身を含む): 28807680

約数和(自身を除く): 10488963

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 11903, 35709, 107127, 226157, 321381, 678471, 964143, 2035413, 6106239, 18318717]

約数ペア:

[(1, 18318717), (3, 6106239), (9, 2035413), (19, 964143), (27, 678471), (57, 321381), (81, 226157), (171, 107127), (513, 35709), (1539, 11903)]