A:
Positive:
1 x 310924911 x 28265913 x 23917317 x 182897143 x 21743187 x 16627221 x 140691279 x 2431
Negative:
-1 x -3109249-11 x -282659-13 x -239173-17 x -182897-143 x -21743-187 x -16627-221 x -14069-1279 x -2431
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 3,109,249, 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 | 3,109,249 | |
| -1 | -3,109,249 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,109,249.
Example:
1 x 3,109,249 = 3,109,249
and
-1 x -3,109,249 = 3,109,249
Notice both answers equal 3,109,249
With that explanation out of the way, let's continue. Next, we take the number 3,109,249 and divide it by 2:
3,109,249 ÷ 2 = 1,554,624.5
If the quotient is a whole number, then 2 and 1,554,624.5 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 | 3,109,249 | |
| -1 | -3,109,249 |
Now, we try dividing 3,109,249 by 3:
3,109,249 ÷ 3 = 1,036,416.3333
If the quotient is a whole number, then 3 and 1,036,416.3333 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 | 3,109,249 | |
| -1 | -3,109,249 |
Let's try dividing by 4:
3,109,249 ÷ 4 = 777,312.25
If the quotient is a whole number, then 4 and 777,312.25 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 | 3,109,249 | |
| -1 | 3,109,249 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 17 | 143 | 187 | 221 | 1,279 | 2,431 | 14,069 | 16,627 | 21,743 | 182,897 | 239,173 | 282,659 | 3,109,249 |
| -1 | -11 | -13 | -17 | -143 | -187 | -221 | -1,279 | -2,431 | -14,069 | -16,627 | -21,743 | -182,897 | -239,173 | -282,659 | -3,109,249 |
Here are some more numbers to try:
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