Q: What are the factor combinations of the number 138,387,360?

 A:
Positive:   1 x 1383873602 x 691936803 x 461291204 x 345968405 x 276774726 x 230645608 x 1729842010 x 1383873612 x 1153228015 x 922582416 x 864921020 x 691936824 x 576614030 x 461291232 x 432460540 x 345968448 x 288307060 x 230645680 x 172984296 x 1441535120 x 1153228160 x 864921240 x 576614480 x 288307
Negative: -1 x -138387360-2 x -69193680-3 x -46129120-4 x -34596840-5 x -27677472-6 x -23064560-8 x -17298420-10 x -13838736-12 x -11532280-15 x -9225824-16 x -8649210-20 x -6919368-24 x -5766140-30 x -4612912-32 x -4324605-40 x -3459684-48 x -2883070-60 x -2306456-80 x -1729842-96 x -1441535-120 x -1153228-160 x -864921-240 x -576614-480 x -288307


How do I find the factor combinations of the number 138,387,360?

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 138,387,360, 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.

1 138,387,360
-1 -138,387,360

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 138,387,360.

Example:
1 x 138,387,360 = 138,387,360
and
-1 x -138,387,360 = 138,387,360
Notice both answers equal 138,387,360

With that explanation out of the way, let's continue. Next, we take the number 138,387,360 and divide it by 2:

138,387,360 ÷ 2 = 69,193,680

If the quotient is a whole number, then 2 and 69,193,680 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 69,193,680 138,387,360
-1 -2 -69,193,680 -138,387,360

Now, we try dividing 138,387,360 by 3:

138,387,360 ÷ 3 = 46,129,120

If the quotient is a whole number, then 3 and 46,129,120 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 46,129,120 69,193,680 138,387,360
-1 -2 -3 -46,129,120 -69,193,680 -138,387,360

Let's try dividing by 4:

138,387,360 ÷ 4 = 34,596,840

If the quotient is a whole number, then 4 and 34,596,840 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 34,596,840 46,129,120 69,193,680 138,387,360
-1 -2 -3 -4 -34,596,840 -46,129,120 -69,193,680 138,387,360
Keep dividing by the next highest number until you cannot divide anymore.

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

123456810121516202430324048608096120160240480288,307576,614864,9211,153,2281,441,5351,729,8422,306,4562,883,0703,459,6844,324,6054,612,9125,766,1406,919,3688,649,2109,225,82411,532,28013,838,73617,298,42023,064,56027,677,47234,596,84046,129,12069,193,680138,387,360
-1-2-3-4-5-6-8-10-12-15-16-20-24-30-32-40-48-60-80-96-120-160-240-480-288,307-576,614-864,921-1,153,228-1,441,535-1,729,842-2,306,456-2,883,070-3,459,684-4,324,605-4,612,912-5,766,140-6,919,368-8,649,210-9,225,824-11,532,280-13,838,736-17,298,420-23,064,560-27,677,472-34,596,840-46,129,120-69,193,680-138,387,360

More Examples

Here are some more numbers to try:

138,387,358138,387,359138,387,361138,387,362
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