H.C.F (Highest Common Factor ):
H.C.F (Highest Common Factor ) of two or more numbers
is the greatest number which is a divisor or factor of all the
When the given numbers have been resolved into prime
factors, the H.C.F is the product of all the common factors.
Each common actor is considered once only with the minimum
exponent which appears in it e.g. H.C.F of 480 , 360 , 600 is 120.
It can be found as under: