hcf(18, 54, 81) = 9.
Using prime factorization:
18 = 2 x 3^2
54 = 2 x 3^3
81 = 3^4
hcf = 3^2 = 9
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The GCF is 18.
The GCF/HCF of 54 and 504 is 18.
It is: 18
The HCF is 18
The factors of 54 are: 1, 2, 3, 6, 9, 18, 27, 54 The factors of 81 are: 1, 3, 9, 27, 81