A:
Positive:
1 x 873748255 x 1747496519 x 459867525 x 349499329 x 301292595 x 919735145 x 602585475 x 183947551 x 158575725 x 1205172755 x 317156343 x 13775
Negative:
-1 x -87374825-5 x -17474965-19 x -4598675-25 x -3494993-29 x -3012925-95 x -919735-145 x -602585-475 x -183947-551 x -158575-725 x -120517-2755 x -31715-6343 x -13775
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 87,374,825, 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 | 87,374,825 | |
| -1 | -87,374,825 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,374,825.
Example:
1 x 87,374,825 = 87,374,825
and
-1 x -87,374,825 = 87,374,825
Notice both answers equal 87,374,825
With that explanation out of the way, let's continue. Next, we take the number 87,374,825 and divide it by 2:
87,374,825 ÷ 2 = 43,687,412.5
If the quotient is a whole number, then 2 and 43,687,412.5 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 | 87,374,825 | |
| -1 | -87,374,825 |
Now, we try dividing 87,374,825 by 3:
87,374,825 ÷ 3 = 29,124,941.6667
If the quotient is a whole number, then 3 and 29,124,941.6667 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 | 87,374,825 | |
| -1 | -87,374,825 |
Let's try dividing by 4:
87,374,825 ÷ 4 = 21,843,706.25
If the quotient is a whole number, then 4 and 21,843,706.25 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 | 87,374,825 | |
| -1 | 87,374,825 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 29 | 95 | 145 | 475 | 551 | 725 | 2,755 | 6,343 | 13,775 | 31,715 | 120,517 | 158,575 | 183,947 | 602,585 | 919,735 | 3,012,925 | 3,494,993 | 4,598,675 | 17,474,965 | 87,374,825 |
| -1 | -5 | -19 | -25 | -29 | -95 | -145 | -475 | -551 | -725 | -2,755 | -6,343 | -13,775 | -31,715 | -120,517 | -158,575 | -183,947 | -602,585 | -919,735 | -3,012,925 | -3,494,993 | -4,598,675 | -17,474,965 | -87,374,825 |
Here are some more numbers to try:
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