A:
Positive:
1 x 28716055 x 57432111 x 26105555 x 52211109 x 26345479 x 5995545 x 52691199 x 2395
Negative:
-1 x -2871605-5 x -574321-11 x -261055-55 x -52211-109 x -26345-479 x -5995-545 x -5269-1199 x -2395
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 2,871,605, 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 | 2,871,605 | |
| -1 | -2,871,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,871,605.
Example:
1 x 2,871,605 = 2,871,605
and
-1 x -2,871,605 = 2,871,605
Notice both answers equal 2,871,605
With that explanation out of the way, let's continue. Next, we take the number 2,871,605 and divide it by 2:
2,871,605 ÷ 2 = 1,435,802.5
If the quotient is a whole number, then 2 and 1,435,802.5 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 | 2,871,605 | |
| -1 | -2,871,605 |
Now, we try dividing 2,871,605 by 3:
2,871,605 ÷ 3 = 957,201.6667
If the quotient is a whole number, then 3 and 957,201.6667 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 | 2,871,605 | |
| -1 | -2,871,605 |
Let's try dividing by 4:
2,871,605 ÷ 4 = 717,901.25
If the quotient is a whole number, then 4 and 717,901.25 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 | 2,871,605 | |
| -1 | 2,871,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 109 | 479 | 545 | 1,199 | 2,395 | 5,269 | 5,995 | 26,345 | 52,211 | 261,055 | 574,321 | 2,871,605 |
| -1 | -5 | -11 | -55 | -109 | -479 | -545 | -1,199 | -2,395 | -5,269 | -5,995 | -26,345 | -52,211 | -261,055 | -574,321 | -2,871,605 |
Here are some more numbers to try:
Try the factor calculator