Q: What are the prime factors of the number 20,496,224?

 A: 2, 7, 37, 2473

Why are those the prime factors of the number 20,496,224?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 20,496,224

20,496,224
Factor Arrows
210,248,112
Factor Arrows
25,124,056
Factor Arrows
22,562,028
Factor Arrows
21,281,014
Factor Arrows
2640,507
Factor Arrows
791,501
Factor Arrows
372,473

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 7, 37, 2473

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 37 x 2,473 = 20,496,224

This can also be written as 25 x 71 x 371 x 2,4731 = 20,496,224

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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