Q: What are the factor combinations of the number 402,896?

 A:
Positive:   1 x 4028962 x 2014484 x 1007248 x 5036213 x 3099216 x 2518126 x 1549652 x 7748104 x 3874149 x 2704169 x 2384208 x 1937298 x 1352338 x 1192596 x 676
Negative: -1 x -402896-2 x -201448-4 x -100724-8 x -50362-13 x -30992-16 x -25181-26 x -15496-52 x -7748-104 x -3874-149 x -2704-169 x -2384-208 x -1937-298 x -1352-338 x -1192-596 x -676


How do I find the factor combinations of the number 402,896?

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 402,896, 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.

1 402,896
-1 -402,896

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 402,896.

Example:
1 x 402,896 = 402,896
and
-1 x -402,896 = 402,896
Notice both answers equal 402,896

With that explanation out of the way, let's continue. Next, we take the number 402,896 and divide it by 2:

402,896 ÷ 2 = 201,448

If the quotient is a whole number, then 2 and 201,448 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 2 201,448 402,896
-1 -2 -201,448 -402,896

Now, we try dividing 402,896 by 3:

402,896 ÷ 3 = 134,298.6667

If the quotient is a whole number, then 3 and 134,298.6667 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 2 201,448 402,896
-1 -2 -201,448 -402,896

Let's try dividing by 4:

402,896 ÷ 4 = 100,724

If the quotient is a whole number, then 4 and 100,724 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 4 100,724 201,448 402,896
-1 -2 -4 -100,724 -201,448 402,896
Keep dividing by the next highest number until you cannot divide anymore.

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

1248131626521041491692082983385966761,1921,3521,9372,3842,7043,8747,74815,49625,18130,99250,362100,724201,448402,896
-1-2-4-8-13-16-26-52-104-149-169-208-298-338-596-676-1,192-1,352-1,937-2,384-2,704-3,874-7,748-15,496-25,181-30,992-50,362-100,724-201,448-402,896

More Examples

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