The Highest Common Factor (H.C.F) of two or more numbers is the greatest number which divides each of them exactly.

Follow the below mentioned steps to find the HCF of a given number.

**Steps 1:**

Find all the factors of each given number.

**Step 2:**

Find common factors of the given number.

**Step 3:**

The greatest of all the factors obtained in previous step is the required highest common factor (H.C.F).

__Demonstration:__

**Find the highest common factor (H.C.F) of 14 and 18.**

Factors of 14 = 1, 2, 7 and 14.

Factors of 18 = 1, 2, 3, 6, 9 and 18.

Therefore, common factor of 14 and 18 = 1 and 2.

Highest common factor (H.C.F) of 14 and 18 = 2.