The least common factor of any set of integers is 1.
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The greatest common factor of 84 132 and 156 is 12.
The highest common factor of the numbers 91, 156 and 169 is 13.
It is: 39
13 is the highest common factor of 78, 156 and 169.
The greatest common factor (GCF) of two numbers is the largest number that can evenly divide both numbers. To find the GCF of 156 and 204, we first need to find the prime factorization of each number. 156 = 2^2 * 3 * 13 and 204 = 2^2 * 3 * 17. The GCF is the product of the common prime factors raised to the lowest power, which in this case is 2^2 * 3 = 12. Therefore, the greatest common factor of 156 and 204 is 12.