Q: What are the factor combinations of the number 1,220,688?

 A:
Positive:   1 x 12206882 x 6103443 x 4068964 x 3051726 x 2034487 x 1743848 x 1525869 x 13563212 x 10172414 x 8719216 x 7629318 x 6781621 x 5812824 x 5086228 x 4359636 x 3390842 x 2906448 x 2543149 x 2491256 x 2179863 x 1937672 x 1695484 x 1453298 x 12456112 x 10899126 x 9688144 x 8477147 x 8304168 x 7266173 x 7056196 x 6228252 x 4844294 x 4152336 x 3633346 x 3528392 x 3114441 x 2768504 x 2422519 x 2352588 x 2076692 x 1764784 x 1557882 x 13841008 x 12111038 x 1176
Negative: -1 x -1220688-2 x -610344-3 x -406896-4 x -305172-6 x -203448-7 x -174384-8 x -152586-9 x -135632-12 x -101724-14 x -87192-16 x -76293-18 x -67816-21 x -58128-24 x -50862-28 x -43596-36 x -33908-42 x -29064-48 x -25431-49 x -24912-56 x -21798-63 x -19376-72 x -16954-84 x -14532-98 x -12456-112 x -10899-126 x -9688-144 x -8477-147 x -8304-168 x -7266-173 x -7056-196 x -6228-252 x -4844-294 x -4152-336 x -3633-346 x -3528-392 x -3114-441 x -2768-504 x -2422-519 x -2352-588 x -2076-692 x -1764-784 x -1557-882 x -1384-1008 x -1211-1038 x -1176


How do I find the factor combinations of the number 1,220,688?

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 1,220,688, 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 1,220,688
-1 -1,220,688

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 1,220,688.

Example:
1 x 1,220,688 = 1,220,688
and
-1 x -1,220,688 = 1,220,688
Notice both answers equal 1,220,688

With that explanation out of the way, let's continue. Next, we take the number 1,220,688 and divide it by 2:

1,220,688 ÷ 2 = 610,344

If the quotient is a whole number, then 2 and 610,344 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 2 610,344 1,220,688
-1 -2 -610,344 -1,220,688

Now, we try dividing 1,220,688 by 3:

1,220,688 ÷ 3 = 406,896

If the quotient is a whole number, then 3 and 406,896 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 3 406,896 610,344 1,220,688
-1 -2 -3 -406,896 -610,344 -1,220,688

Let's try dividing by 4:

1,220,688 ÷ 4 = 305,172

If the quotient is a whole number, then 4 and 305,172 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 4 305,172 406,896 610,344 1,220,688
-1 -2 -3 -4 -305,172 -406,896 -610,344 1,220,688
Keep dividing by the next highest number until you cannot divide anymore.

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

12346789121416182124283642484956637284981121261441471681731962522943363463924415045195886927848821,0081,0381,1761,2111,3841,5571,7642,0762,3522,4222,7683,1143,5283,6334,1524,8446,2287,0567,2668,3048,4779,68810,89912,45614,53216,95419,37621,79824,91225,43129,06433,90843,59650,86258,12867,81676,29387,192101,724135,632152,586174,384203,448305,172406,896610,3441,220,688
-1-2-3-4-6-7-8-9-12-14-16-18-21-24-28-36-42-48-49-56-63-72-84-98-112-126-144-147-168-173-196-252-294-336-346-392-441-504-519-588-692-784-882-1,008-1,038-1,176-1,211-1,384-1,557-1,764-2,076-2,352-2,422-2,768-3,114-3,528-3,633-4,152-4,844-6,228-7,056-7,266-8,304-8,477-9,688-10,899-12,456-14,532-16,954-19,376-21,798-24,912-25,431-29,064-33,908-43,596-50,862-58,128-67,816-76,293-87,192-101,724-135,632-152,586-174,384-203,448-305,172-406,896-610,344-1,220,688

More Examples

Here are some more numbers to try:

1,220,6861,220,6871,220,6891,220,690
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