A:
Positive:
1 x 861621677 x 1230888113 x 662785991 x 946837349 x 2468832443 x 352692713 x 317594537 x 18991
Negative:
-1 x -86162167-7 x -12308881-13 x -6627859-91 x -946837-349 x -246883-2443 x -35269-2713 x -31759-4537 x -18991
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 86,162,167, 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 | 86,162,167 | |
| -1 | -86,162,167 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 86,162,167.
Example:
1 x 86,162,167 = 86,162,167
and
-1 x -86,162,167 = 86,162,167
Notice both answers equal 86,162,167
With that explanation out of the way, let's continue. Next, we take the number 86,162,167 and divide it by 2:
86,162,167 ÷ 2 = 43,081,083.5
If the quotient is a whole number, then 2 and 43,081,083.5 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 | 86,162,167 | |
| -1 | -86,162,167 |
Now, we try dividing 86,162,167 by 3:
86,162,167 ÷ 3 = 28,720,722.3333
If the quotient is a whole number, then 3 and 28,720,722.3333 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 | 86,162,167 | |
| -1 | -86,162,167 |
Let's try dividing by 4:
86,162,167 ÷ 4 = 21,540,541.75
If the quotient is a whole number, then 4 and 21,540,541.75 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 | 86,162,167 | |
| -1 | 86,162,167 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 349 | 2,443 | 2,713 | 4,537 | 18,991 | 31,759 | 35,269 | 246,883 | 946,837 | 6,627,859 | 12,308,881 | 86,162,167 |
| -1 | -7 | -13 | -91 | -349 | -2,443 | -2,713 | -4,537 | -18,991 | -31,759 | -35,269 | -246,883 | -946,837 | -6,627,859 | -12,308,881 | -86,162,167 |
Here are some more numbers to try:
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