A:
Positive:
1 x 86583374911 x 7871215917 x 50931397187 x 4630127521 x 16618695731 x 1510798857 x 977578887 x 97427
Negative:
-1 x -865833749-11 x -78712159-17 x -50931397-187 x -4630127-521 x -1661869-5731 x -151079-8857 x -97757-8887 x -97427
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 865,833,749, 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 | 865,833,749 | |
| -1 | -865,833,749 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 865,833,749.
Example:
1 x 865,833,749 = 865,833,749
and
-1 x -865,833,749 = 865,833,749
Notice both answers equal 865,833,749
With that explanation out of the way, let's continue. Next, we take the number 865,833,749 and divide it by 2:
865,833,749 ÷ 2 = 432,916,874.5
If the quotient is a whole number, then 2 and 432,916,874.5 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 | 865,833,749 | |
| -1 | -865,833,749 |
Now, we try dividing 865,833,749 by 3:
865,833,749 ÷ 3 = 288,611,249.6667
If the quotient is a whole number, then 3 and 288,611,249.6667 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 | 865,833,749 | |
| -1 | -865,833,749 |
Let's try dividing by 4:
865,833,749 ÷ 4 = 216,458,437.25
If the quotient is a whole number, then 4 and 216,458,437.25 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 | 865,833,749 | |
| -1 | 865,833,749 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 187 | 521 | 5,731 | 8,857 | 8,887 | 97,427 | 97,757 | 151,079 | 1,661,869 | 4,630,127 | 50,931,397 | 78,712,159 | 865,833,749 |
| -1 | -11 | -17 | -187 | -521 | -5,731 | -8,857 | -8,887 | -97,427 | -97,757 | -151,079 | -1,661,869 | -4,630,127 | -50,931,397 | -78,712,159 | -865,833,749 |
Here are some more numbers to try:
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