A:
Positive:
1 x 28512255 x 57024513 x 21932525 x 11404931 x 9197565 x 43865155 x 18395283 x 10075325 x 8773403 x 7075775 x 36791415 x 2015
Negative:
-1 x -2851225-5 x -570245-13 x -219325-25 x -114049-31 x -91975-65 x -43865-155 x -18395-283 x -10075-325 x -8773-403 x -7075-775 x -3679-1415 x -2015
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 2,851,225, 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 | 2,851,225 | |
| -1 | -2,851,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,851,225.
Example:
1 x 2,851,225 = 2,851,225
and
-1 x -2,851,225 = 2,851,225
Notice both answers equal 2,851,225
With that explanation out of the way, let's continue. Next, we take the number 2,851,225 and divide it by 2:
2,851,225 ÷ 2 = 1,425,612.5
If the quotient is a whole number, then 2 and 1,425,612.5 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 | 2,851,225 | |
| -1 | -2,851,225 |
Now, we try dividing 2,851,225 by 3:
2,851,225 ÷ 3 = 950,408.3333
If the quotient is a whole number, then 3 and 950,408.3333 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 | 2,851,225 | |
| -1 | -2,851,225 |
Let's try dividing by 4:
2,851,225 ÷ 4 = 712,806.25
If the quotient is a whole number, then 4 and 712,806.25 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 | 2,851,225 | |
| -1 | 2,851,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 31 | 65 | 155 | 283 | 325 | 403 | 775 | 1,415 | 2,015 | 3,679 | 7,075 | 8,773 | 10,075 | 18,395 | 43,865 | 91,975 | 114,049 | 219,325 | 570,245 | 2,851,225 |
| -1 | -5 | -13 | -25 | -31 | -65 | -155 | -283 | -325 | -403 | -775 | -1,415 | -2,015 | -3,679 | -7,075 | -8,773 | -10,075 | -18,395 | -43,865 | -91,975 | -114,049 | -219,325 | -570,245 | -2,851,225 |
Here are some more numbers to try:
Try the factor calculator