19700751

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{21817}}^1$

素因数の和:21870

約数の個数: 16

約数和(自身を含む): 30719744

約数和(自身を除く): 11018993

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 21817, 65451, 152719, 458157, 938131, 2814393, 6566917, 19700751]

約数ペア:

[(1, 19700751), (3, 6566917), (7, 2814393), (21, 938131), (43, 458157), (129, 152719), (301, 65451), (903, 21817)]