Only the number one.
17 and 3 can evenly go into 51.
The HCF is one
3 and 1 will go into both number evenly leaving no remainders.
Each of these numbers goes evenly into 867: 1, 3, 17, 51, 289, 867.
1, 3, 17, 51.
No. 51 is not evenly divisible by four.
3 and 17.
1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765.
3 goes into 51 evenly 17 times So does 25 1/2 (twice). I am wondering if you want only whole numbers? You could go on forever with fractions and decimals.
1 and 3
1, 3, 5, 15, 17, 51, 85, 255.
1 and 3 will go into both numbers evenly leaving no remainders