\(Ư\left(a\right)=\left\{\pm1;\pm7;\pm11;\pm77\right\}\)
\(Ư\left(b\right)=\left\{\pm1;\pm2;\pm4;\pm8;\pm16\right\}\)
\(Ư\left(c\right)=\left\{\pm1;\pm3;\pm5;\pm9;\pm15;\pm45\right\}\)
a) a = 7 . 11
=> Ư(a) = { 1 ; 7 ; 11 ; 77 }
b) b = 24
=> Ư(b) = { 1 ; 2 ; 4 ; 8 ; 16 }
c) c = 32 . 5
=> Ư(c) = { 1 ; 3 ; 5 ; 9 ; 15 ; 45 }