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The number is 1.
Only the number 1.
1, 3, 9.
29 is prime.
The highest common factor of 54 and 81 is 27
These numbers: 1, 2, 7, 14.
2 goes evenly into 4 and 28
There are 27 4's in the number 28.
The only whole number is 1, because 27 is a prime number.
28 goes into 7 and 2, while 30 goes into 15 and 2.
The HCF of 27 and 80 is 1
1, 3, 9, 27.
The number 3
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