21048021

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{32939}}^1$

素因数の和:33016

約数の個数: 12

約数和(自身を含む): 30831840

約数和(自身を除く): 9783819

約数列:

[1, 3, 9, 71, 213, 639, 32939, 98817, 296451, 2338669, 7016007, 21048021]

約数ペア:

[(1, 21048021), (3, 7016007), (9, 2338669), (71, 296451), (213, 98817), (639, 32939)]