A:
Positive:
1 x 8564627155 x 17129254319 x 4507698595 x 9015397211 x 40590651055 x 8118134009 x 21363520045 x 42727
Negative:
-1 x -856462715-5 x -171292543-19 x -45076985-95 x -9015397-211 x -4059065-1055 x -811813-4009 x -213635-20045 x -42727
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 856,462,715, 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 | 856,462,715 | |
| -1 | -856,462,715 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 856,462,715.
Example:
1 x 856,462,715 = 856,462,715
and
-1 x -856,462,715 = 856,462,715
Notice both answers equal 856,462,715
With that explanation out of the way, let's continue. Next, we take the number 856,462,715 and divide it by 2:
856,462,715 ÷ 2 = 428,231,357.5
If the quotient is a whole number, then 2 and 428,231,357.5 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 | 856,462,715 | |
| -1 | -856,462,715 |
Now, we try dividing 856,462,715 by 3:
856,462,715 ÷ 3 = 285,487,571.6667
If the quotient is a whole number, then 3 and 285,487,571.6667 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 | 856,462,715 | |
| -1 | -856,462,715 |
Let's try dividing by 4:
856,462,715 ÷ 4 = 214,115,678.75
If the quotient is a whole number, then 4 and 214,115,678.75 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 | 856,462,715 | |
| -1 | 856,462,715 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 211 | 1,055 | 4,009 | 20,045 | 42,727 | 213,635 | 811,813 | 4,059,065 | 9,015,397 | 45,076,985 | 171,292,543 | 856,462,715 |
| -1 | -5 | -19 | -95 | -211 | -1,055 | -4,009 | -20,045 | -42,727 | -213,635 | -811,813 | -4,059,065 | -9,015,397 | -45,076,985 | -171,292,543 | -856,462,715 |
Here are some more numbers to try:
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