Q: What are the factor combinations of the number 731,135,577?

 A:
Positive:   1 x 7311355773 x 24371185937 x 19760421111 x 6586807373 x 19601491119 x 65338313801 x 5297717659 x 41403
Negative: -1 x -731135577-3 x -243711859-37 x -19760421-111 x -6586807-373 x -1960149-1119 x -653383-13801 x -52977-17659 x -41403


How do I find the factor combinations of the number 731,135,577?

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 731,135,577, 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.

1 731,135,577
-1 -731,135,577

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 731,135,577.

Example:
1 x 731,135,577 = 731,135,577
and
-1 x -731,135,577 = 731,135,577
Notice both answers equal 731,135,577

With that explanation out of the way, let's continue. Next, we take the number 731,135,577 and divide it by 2:

731,135,577 ÷ 2 = 365,567,788.5

If the quotient is a whole number, then 2 and 365,567,788.5 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:

1 731,135,577
-1 -731,135,577

Now, we try dividing 731,135,577 by 3:

731,135,577 ÷ 3 = 243,711,859

If the quotient is a whole number, then 3 and 243,711,859 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 3 243,711,859 731,135,577
-1 -3 -243,711,859 -731,135,577

Let's try dividing by 4:

731,135,577 ÷ 4 = 182,783,894.25

If the quotient is a whole number, then 4 and 182,783,894.25 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 3 243,711,859 731,135,577
-1 -3 -243,711,859 731,135,577
Keep dividing by the next highest number until you cannot divide anymore.

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

13371113731,11913,80117,65941,40352,977653,3831,960,1496,586,80719,760,421243,711,859731,135,577
-1-3-37-111-373-1,119-13,801-17,659-41,403-52,977-653,383-1,960,149-6,586,807-19,760,421-243,711,859-731,135,577

More Examples

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