A:
Positive:
1 x 7851883555 x 1570376717 x 11216976535 x 22433953277 x 28346151385 x 5669231939 x 4049459695 x 80989
Negative:
-1 x -785188355-5 x -157037671-7 x -112169765-35 x -22433953-277 x -2834615-1385 x -566923-1939 x -404945-9695 x -80989
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 785,188,355, 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 | 785,188,355 | |
| -1 | -785,188,355 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 785,188,355.
Example:
1 x 785,188,355 = 785,188,355
and
-1 x -785,188,355 = 785,188,355
Notice both answers equal 785,188,355
With that explanation out of the way, let's continue. Next, we take the number 785,188,355 and divide it by 2:
785,188,355 ÷ 2 = 392,594,177.5
If the quotient is a whole number, then 2 and 392,594,177.5 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 | 785,188,355 | |
| -1 | -785,188,355 |
Now, we try dividing 785,188,355 by 3:
785,188,355 ÷ 3 = 261,729,451.6667
If the quotient is a whole number, then 3 and 261,729,451.6667 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 | 785,188,355 | |
| -1 | -785,188,355 |
Let's try dividing by 4:
785,188,355 ÷ 4 = 196,297,088.75
If the quotient is a whole number, then 4 and 196,297,088.75 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 | 785,188,355 | |
| -1 | 785,188,355 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 277 | 1,385 | 1,939 | 9,695 | 80,989 | 404,945 | 566,923 | 2,834,615 | 22,433,953 | 112,169,765 | 157,037,671 | 785,188,355 |
| -1 | -5 | -7 | -35 | -277 | -1,385 | -1,939 | -9,695 | -80,989 | -404,945 | -566,923 | -2,834,615 | -22,433,953 | -112,169,765 | -157,037,671 | -785,188,355 |
Here are some more numbers to try:
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