Q: What are the factor combinations of the number 36,405,302?

 A:
Positive:   1 x 364053022 x 18202651
Negative: -1 x -36405302-2 x -18202651


How do I find the factor combinations of the number 36,405,302?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 36,405,302, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 36,405,302
-1 -36,405,302

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 36,405,302.

Example:
1 x 36,405,302 = 36,405,302
and
-1 x -36,405,302 = 36,405,302
Notice both answers equal 36,405,302

With that explanation out of the way, let's continue. Next, we take the number 36,405,302 and divide it by 2:

36,405,302 ÷ 2 = 18,202,651

If the quotient is a whole number, then 2 and 18,202,651 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

Here is what our table should look like at this step:

1 2 18,202,651 36,405,302
-1 -2 -18,202,651 -36,405,302

Now, we try dividing 36,405,302 by 3:

36,405,302 ÷ 3 = 12,135,100.6667

If the quotient is a whole number, then 3 and 12,135,100.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 2 18,202,651 36,405,302
-1 -2 -18,202,651 -36,405,302

Let's try dividing by 4:

36,405,302 ÷ 4 = 9,101,325.5

If the quotient is a whole number, then 4 and 9,101,325.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 2 18,202,651 36,405,302
-1 -2 -18,202,651 36,405,302
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

1218,202,65136,405,302
-1-2-18,202,651-36,405,302

More Examples

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