The lowest set of numbers that can multiply together to get 546 are 2 x 3 x 7 x 13. Every number greater than 2, is, according to the Fundamental Theorem of Arithmetic, displayable as the product of its prime factors.
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2, 3, 7 and 13 are the only prime numbers that divide evenly into 546 with no remainder.
As 13 is prime and is not a factor of 24, then they are relatively prime
The only prime number (factor) of 169 is 13 (13 x 13 = 169).
To find the LCM of 26 and 42 you first need to break those numbers up into their prime factors. In this case, that would be: 26 = 2x13 42 = 2x3x7 The next step is to identify any common factors. In this case, both numbers have a 2 as a prime factor, so we can discard one of these. Take every other prime factor (2, 3, 7 and 13) and multiply them together to find the LCM: 2x3x7x13 = 546 Therefore the LCM of 26 and 42 is 546.
Both values are prime, thus we conclude that the GCF (and the only common factor) is 1.
91 is the only composite factor of 91. 7 and 13 are prime.