A:
Positive:
1 x 78478755 x 15695757 x 112112525 x 31391535 x 224225125 x 62783175 x 44845875 x 8969
Negative:
-1 x -7847875-5 x -1569575-7 x -1121125-25 x -313915-35 x -224225-125 x -62783-175 x -44845-875 x -8969
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 7,847,875, 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 | 7,847,875 | |
| -1 | -7,847,875 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,847,875.
Example:
1 x 7,847,875 = 7,847,875
and
-1 x -7,847,875 = 7,847,875
Notice both answers equal 7,847,875
With that explanation out of the way, let's continue. Next, we take the number 7,847,875 and divide it by 2:
7,847,875 ÷ 2 = 3,923,937.5
If the quotient is a whole number, then 2 and 3,923,937.5 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 | 7,847,875 | |
| -1 | -7,847,875 |
Now, we try dividing 7,847,875 by 3:
7,847,875 ÷ 3 = 2,615,958.3333
If the quotient is a whole number, then 3 and 2,615,958.3333 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 | 7,847,875 | |
| -1 | -7,847,875 |
Let's try dividing by 4:
7,847,875 ÷ 4 = 1,961,968.75
If the quotient is a whole number, then 4 and 1,961,968.75 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 | 7,847,875 | |
| -1 | 7,847,875 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 125 | 175 | 875 | 8,969 | 44,845 | 62,783 | 224,225 | 313,915 | 1,121,125 | 1,569,575 | 7,847,875 |
| -1 | -5 | -7 | -25 | -35 | -125 | -175 | -875 | -8,969 | -44,845 | -62,783 | -224,225 | -313,915 | -1,121,125 | -1,569,575 | -7,847,875 |
Here are some more numbers to try:
Try the factor calculator