Đáp án:
._.
Giải thích các bước giải:
`a)`
Ta có: `18 = 2.3^2`
`80 = 5 . 2^4`
`=> ƯCLNN (18;80) = 2`
`=> ƯC(18;80) = Ư(2) = { ±1; ±2}`
`b)`
Ta có: `60=2^2 . 3. 5`
`84 = 2^2 . 3. 7`
`=> ƯCLNN ( 60; 84) = 3.2^2 = 12`
`=> ƯC(60; 84 ) = Ư(12) = { ±1; ±2; ±3; ±4; ±6; ±12}`
`c)`
Ta có: `16 = 2^4`
`24 = 2^3 . 3`
`=> ƯCLNN(16; 24) = 2^3 = 8`
`=> ƯC(16; 24)=Ư(8) = { ±1; ±2; ±4; ±8}`
`d)`
Ta có: `160=5 . 2^5`
`224 = 2^5 . 7`
`=> ƯCLNN(160; 224)=2^5 = 32`
`=> ƯC(160; 224) = Ư(32)={ ±1; ±2; ±4; ±8; ±16; ±32}`
