Question

What is the prime factorization of 240

Answer 1

The given number, 240, has a ones digit of 0 which means it is divisible by 10.
To get the prime factors of 240, let us do the branching of the prime factor tree. 
   240
  /       \
2        120
             /   \
          2      60
                    /  \
                  2     30
                         /  \
                       2    15
                             /   \
                          3       5
 Therefore, 240 has the prime factors of 2 x 2 x 2 x 2 x 3 x 5 or  2^4 x3 x5 = 240 .

Answer 2

$240|2\\120|2\\.\ 60|2\\.\ 30|2\\.\ 15|3\\. \ \ 5|5\\.\ \ 1|\\\\240=2\cdot2\cdot2\cdot2\cdot3\cdot5=2^4\cdot3\cdot5$