Q: What are the factor combinations of the number 721,764?

 A:
Positive:   1 x 7217642 x 3608823 x 2405884 x 1804416 x 1202949 x 8019612 x 6014718 x 4009827 x 2673236 x 2004941 x 1760454 x 1336682 x 8802108 x 6683123 x 5868163 x 4428164 x 4401246 x 2934326 x 2214369 x 1956489 x 1476492 x 1467652 x 1107738 x 978
Negative: -1 x -721764-2 x -360882-3 x -240588-4 x -180441-6 x -120294-9 x -80196-12 x -60147-18 x -40098-27 x -26732-36 x -20049-41 x -17604-54 x -13366-82 x -8802-108 x -6683-123 x -5868-163 x -4428-164 x -4401-246 x -2934-326 x -2214-369 x -1956-489 x -1476-492 x -1467-652 x -1107-738 x -978


How do I find the factor combinations of the number 721,764?

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 721,764, 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.

1 721,764
-1 -721,764

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 721,764.

Example:
1 x 721,764 = 721,764
and
-1 x -721,764 = 721,764
Notice both answers equal 721,764

With that explanation out of the way, let's continue. Next, we take the number 721,764 and divide it by 2:

721,764 ÷ 2 = 360,882

If the quotient is a whole number, then 2 and 360,882 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 2 360,882 721,764
-1 -2 -360,882 -721,764

Now, we try dividing 721,764 by 3:

721,764 ÷ 3 = 240,588

If the quotient is a whole number, then 3 and 240,588 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 3 240,588 360,882 721,764
-1 -2 -3 -240,588 -360,882 -721,764

Let's try dividing by 4:

721,764 ÷ 4 = 180,441

If the quotient is a whole number, then 4 and 180,441 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 3 4 180,441 240,588 360,882 721,764
-1 -2 -3 -4 -180,441 -240,588 -360,882 721,764
Keep dividing by the next highest number until you cannot divide anymore.

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

123469121827364154821081231631642463263694894926527389781,1071,4671,4761,9562,2142,9344,4014,4285,8686,6838,80213,36617,60420,04926,73240,09860,14780,196120,294180,441240,588360,882721,764
-1-2-3-4-6-9-12-18-27-36-41-54-82-108-123-163-164-246-326-369-489-492-652-738-978-1,107-1,467-1,476-1,956-2,214-2,934-4,401-4,428-5,868-6,683-8,802-13,366-17,604-20,049-26,732-40,098-60,147-80,196-120,294-180,441-240,588-360,882-721,764

More Examples

Here are some more numbers to try:

721,762721,763721,765721,766
Try the factor calculator

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