Factors of a number are any numbers that divide into it exactly. The multiples of a number are numbers that belong to its times table.

It is often useful to write a number as the product of its prime factors. This can be done by listing the factor pairs as successive branches in a factor tree. The branches continue to expand until all the factors are prime numbers. The final answer is the product of the prime numbers displayed at the end of these branches.

Note that the number is not used within a factor tree.

- Question
Write as the product of its prime factors.

written as the product of its prime factors is