The main factors for 70 is 2 x 5 x 7. Put simply, 70 can be expressed as a product of its prime elements that are 2, 5, and 7. 70 can be written as a result of its prime factors 2, 5, and 7 is known as prime decomposition of 70. These divisors are the building blocks that form the number 70. By performing the process of finding the prime factors on 70, we can determine that 2, 5, and 7 are its prime elements. Essentially, we are splitting down the number 70 into its component fundamental elements. Splitting the number 70 into its primary divisors 2, 5, and 7 is called finding the prime factors of 70. By doing this we are representing 70 as a product of its prime factors.