A:
Positive:
1 x 21133217 x 30190317 x 12431343 x 4914749 x 4312959 x 35819119 x 17759301 x 7021413 x 5117731 x 2891833 x 25371003 x 2107
Negative:
-1 x -2113321-7 x -301903-17 x -124313-43 x -49147-49 x -43129-59 x -35819-119 x -17759-301 x -7021-413 x -5117-731 x -2891-833 x -2537-1003 x -2107
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 2,113,321, it is easier to work with a table - it's called factoring from the outside in.
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 | 2,113,321 | |
| -1 | -2,113,321 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,113,321.
Example:
1 x 2,113,321 = 2,113,321
and
-1 x -2,113,321 = 2,113,321
Notice both answers equal 2,113,321
With that explanation out of the way, let's continue. Next, we take the number 2,113,321 and divide it by 2:
2,113,321 ÷ 2 = 1,056,660.5
If the quotient is a whole number, then 2 and 1,056,660.5 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 | 2,113,321 | |
| -1 | -2,113,321 |
Now, we try dividing 2,113,321 by 3:
2,113,321 ÷ 3 = 704,440.3333
If the quotient is a whole number, then 3 and 704,440.3333 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 | 2,113,321 | |
| -1 | -2,113,321 |
Let's try dividing by 4:
2,113,321 ÷ 4 = 528,330.25
If the quotient is a whole number, then 4 and 528,330.25 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 | 2,113,321 | |
| -1 | 2,113,321 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 43 | 49 | 59 | 119 | 301 | 413 | 731 | 833 | 1,003 | 2,107 | 2,537 | 2,891 | 5,117 | 7,021 | 17,759 | 35,819 | 43,129 | 49,147 | 124,313 | 301,903 | 2,113,321 |
| -1 | -7 | -17 | -43 | -49 | -59 | -119 | -301 | -413 | -731 | -833 | -1,003 | -2,107 | -2,537 | -2,891 | -5,117 | -7,021 | -17,759 | -35,819 | -43,129 | -49,147 | -124,313 | -301,903 | -2,113,321 |
Here are some more numbers to try:
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