A:
Positive:
1 x 8578837855 x 17157675711 x 7798943523 x 3729929555 x 15597887115 x 7459859253 x 33908451265 x 678169
Negative:
-1 x -857883785-5 x -171576757-11 x -77989435-23 x -37299295-55 x -15597887-115 x -7459859-253 x -3390845-1265 x -678169
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 857,883,785, 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 | 857,883,785 | |
| -1 | -857,883,785 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 857,883,785.
Example:
1 x 857,883,785 = 857,883,785
and
-1 x -857,883,785 = 857,883,785
Notice both answers equal 857,883,785
With that explanation out of the way, let's continue. Next, we take the number 857,883,785 and divide it by 2:
857,883,785 ÷ 2 = 428,941,892.5
If the quotient is a whole number, then 2 and 428,941,892.5 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 | 857,883,785 | |
| -1 | -857,883,785 |
Now, we try dividing 857,883,785 by 3:
857,883,785 ÷ 3 = 285,961,261.6667
If the quotient is a whole number, then 3 and 285,961,261.6667 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 | 857,883,785 | |
| -1 | -857,883,785 |
Let's try dividing by 4:
857,883,785 ÷ 4 = 214,470,946.25
If the quotient is a whole number, then 4 and 214,470,946.25 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 | 857,883,785 | |
| -1 | 857,883,785 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 23 | 55 | 115 | 253 | 1,265 | 678,169 | 3,390,845 | 7,459,859 | 15,597,887 | 37,299,295 | 77,989,435 | 171,576,757 | 857,883,785 |
| -1 | -5 | -11 | -23 | -55 | -115 | -253 | -1,265 | -678,169 | -3,390,845 | -7,459,859 | -15,597,887 | -37,299,295 | -77,989,435 | -171,576,757 | -857,883,785 |
Here are some more numbers to try:
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