What are the factors of 1521?

Answer 1

This way of finding factors is very safe, confusing and also u can miss few if u r not concentrating.

First find the prime factorization of 1521

Prime factorization is nothing but breaking down a number into its multiples or factors until all the numbers you reach at are prime and cannot be factorized further.

Lets see

(Firstly, sum of digits of 1521 = 1+5+2+1 = 9, which is a multiple of 9. If the sum of digits of a number is a multiple of 9, say 9, 18, 27 etc, then the number is surely divisible by 9. This information is only to help you and is a good to improve ur knowledge)

If not then go by the standard way of dividing 1521 by any prime by using trial and error method. For eg: try dividing by 3. Then start disintegrating as shown below

1521 = 169 * 9 = 13*13*9 = 13*13*3*3 = 13 2 * 3 2 .

Now the factors of 1521 are, ALSO INCLUDE 1.

Now multiply all the possible unique combinations

{1, 3, 3 2, 13, 13*3, 13*3*3, 13*13, 13*13*3, 13*13*3*3 or 1521}

A total of 9 factors

Enjoy.