The LCF (Lowest Common Factor) of any two numbers is 1 (as 1 is a factor of all numbers).
However, I suspect you mean LCM - Lowest Common Multiple.
Write the numbers in their prime factorisations in power form. Then for the HCF use the lowest power of each prime across all the numbers (if a prime does not appear in the factorization of a number, its power is zero) and for the LCM use the highest power of each prime across all the numbers:
192: 26 x 3
224: 25 x 7
HCF: 25 x 30 x 70 = 32 x 1 x 1 = 32
LCM: 26 x 31 x 71 = 64 x 3 x 7 = 1344
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greatest common factor = 24
LCM = Product/HCF = 3072/16 = 192
The LCM (least common multiple) of numbers a,b is defind as (a*b)/(hcf(a,b)) the hcf(16,14) can be found with Euclid algorithm 16=(14)(1)+2 14=(2)(7)+0 thus hcf(16,14)=2 16*14=224 224/2=112 thus the LCM of 14 and 16 is 112
32, 64, 96, 128, 160, 192, 224, 256, 288, 320
The LCF of 48 and 1,000 is 8.