A:
Positive:
1 x 8598676911 x 781697929 x 2965061103 x 834823319 x 2695511133 x 758932617 x 328572987 x 28787
Negative:
-1 x -85986769-11 x -7816979-29 x -2965061-103 x -834823-319 x -269551-1133 x -75893-2617 x -32857-2987 x -28787
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 85,986,769, 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 | 85,986,769 | |
| -1 | -85,986,769 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 85,986,769.
Example:
1 x 85,986,769 = 85,986,769
and
-1 x -85,986,769 = 85,986,769
Notice both answers equal 85,986,769
With that explanation out of the way, let's continue. Next, we take the number 85,986,769 and divide it by 2:
85,986,769 ÷ 2 = 42,993,384.5
If the quotient is a whole number, then 2 and 42,993,384.5 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 | 85,986,769 | |
| -1 | -85,986,769 |
Now, we try dividing 85,986,769 by 3:
85,986,769 ÷ 3 = 28,662,256.3333
If the quotient is a whole number, then 3 and 28,662,256.3333 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 | 85,986,769 | |
| -1 | -85,986,769 |
Let's try dividing by 4:
85,986,769 ÷ 4 = 21,496,692.25
If the quotient is a whole number, then 4 and 21,496,692.25 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 | 85,986,769 | |
| -1 | 85,986,769 |
If you did it right, you will end up with this table:
| 1 | 11 | 29 | 103 | 319 | 1,133 | 2,617 | 2,987 | 28,787 | 32,857 | 75,893 | 269,551 | 834,823 | 2,965,061 | 7,816,979 | 85,986,769 |
| -1 | -11 | -29 | -103 | -319 | -1,133 | -2,617 | -2,987 | -28,787 | -32,857 | -75,893 | -269,551 | -834,823 | -2,965,061 | -7,816,979 | -85,986,769 |
Here are some more numbers to try:
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