A:
Positive:
1 x 78557055 x 157114111 x 71415513 x 60428555 x 14283165 x 120857143 x 54935715 x 10987
Negative:
-1 x -7855705-5 x -1571141-11 x -714155-13 x -604285-55 x -142831-65 x -120857-143 x -54935-715 x -10987
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 7,855,705, 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 | 7,855,705 | |
| -1 | -7,855,705 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,855,705.
Example:
1 x 7,855,705 = 7,855,705
and
-1 x -7,855,705 = 7,855,705
Notice both answers equal 7,855,705
With that explanation out of the way, let's continue. Next, we take the number 7,855,705 and divide it by 2:
7,855,705 ÷ 2 = 3,927,852.5
If the quotient is a whole number, then 2 and 3,927,852.5 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 | 7,855,705 | |
| -1 | -7,855,705 |
Now, we try dividing 7,855,705 by 3:
7,855,705 ÷ 3 = 2,618,568.3333
If the quotient is a whole number, then 3 and 2,618,568.3333 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 | 7,855,705 | |
| -1 | -7,855,705 |
Let's try dividing by 4:
7,855,705 ÷ 4 = 1,963,926.25
If the quotient is a whole number, then 4 and 1,963,926.25 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 | 7,855,705 | |
| -1 | 7,855,705 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 143 | 715 | 10,987 | 54,935 | 120,857 | 142,831 | 604,285 | 714,155 | 1,571,141 | 7,855,705 |
| -1 | -5 | -11 | -13 | -55 | -65 | -143 | -715 | -10,987 | -54,935 | -120,857 | -142,831 | -604,285 | -714,155 | -1,571,141 | -7,855,705 |
Here are some more numbers to try:
Try the factor calculator