356
That's a factor pair.
That happens when one of the numbers is a factor of the other.
Numbers whose only common factor is 1.
There are two numbers, 7 and 49, whose smallest prime factor is 7 in the set of numbers from 1 to 100.
-4
Two numbers whose GCF is one are relatively prime or co-prime
Any two (or more) numbers whose only common factor is 1.
In that case, one of the numbers is a multiple of the other.
There are several possibilities of pairs of numbers whose greatest common factor is 18. 54 and 198 18 and 126 414 and 846 72 and 1422
14 and 28 are two even numbers between 10 and 30 whose greatest common factor is 14.
16 and 8
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