ƯCLN ( 144 , 192 ) > 20
Ta có:
144 2
72 2
36 2
18 2
9 3
3 3
1
192 2
96 2
48 2
24 2
12 2
6 2
3 3
1
\(\Rightarrow\)ƯCLN ( 144,192 ) = 23 . 3 = 8 . 3 = 24
UCLN(144,192) ma lon hon 24:24,48
20=2^2.5
144=2^4.3^2
192=2^6.3
ƯCLL(20;144;192)=2^2=4
144 = 24 . 32
192 = 26 . 3
ƯCLN ( 144 , 192 ) = 24 . 3 = 48