A:
Positive:
1 x 259142917 x 15243719 x 13639171 x 36499113 x 22933323 x 80231207 x 21471349 x 1921
Negative:
-1 x -2591429-17 x -152437-19 x -136391-71 x -36499-113 x -22933-323 x -8023-1207 x -2147-1349 x -1921
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 2,591,429, 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 | 2,591,429 | |
| -1 | -2,591,429 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,591,429.
Example:
1 x 2,591,429 = 2,591,429
and
-1 x -2,591,429 = 2,591,429
Notice both answers equal 2,591,429
With that explanation out of the way, let's continue. Next, we take the number 2,591,429 and divide it by 2:
2,591,429 ÷ 2 = 1,295,714.5
If the quotient is a whole number, then 2 and 1,295,714.5 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 | 2,591,429 | |
| -1 | -2,591,429 |
Now, we try dividing 2,591,429 by 3:
2,591,429 ÷ 3 = 863,809.6667
If the quotient is a whole number, then 3 and 863,809.6667 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 | 2,591,429 | |
| -1 | -2,591,429 |
Let's try dividing by 4:
2,591,429 ÷ 4 = 647,857.25
If the quotient is a whole number, then 4 and 647,857.25 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 | 2,591,429 | |
| -1 | 2,591,429 |
If you did it right, you will end up with this table:
| 1 | 17 | 19 | 71 | 113 | 323 | 1,207 | 1,349 | 1,921 | 2,147 | 8,023 | 22,933 | 36,499 | 136,391 | 152,437 | 2,591,429 |
| -1 | -17 | -19 | -71 | -113 | -323 | -1,207 | -1,349 | -1,921 | -2,147 | -8,023 | -22,933 | -36,499 | -136,391 | -152,437 | -2,591,429 |
Here are some more numbers to try:
Try the factor calculator