A:
Positive:
1 x 805377655 x 161075537 x 1150539511 x 732161535 x 230107955 x 146432377 x 1045945385 x 209189
Negative:
-1 x -80537765-5 x -16107553-7 x -11505395-11 x -7321615-35 x -2301079-55 x -1464323-77 x -1045945-385 x -209189
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 80,537,765, 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 | 80,537,765 | |
| -1 | -80,537,765 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 80,537,765.
Example:
1 x 80,537,765 = 80,537,765
and
-1 x -80,537,765 = 80,537,765
Notice both answers equal 80,537,765
With that explanation out of the way, let's continue. Next, we take the number 80,537,765 and divide it by 2:
80,537,765 ÷ 2 = 40,268,882.5
If the quotient is a whole number, then 2 and 40,268,882.5 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 | 80,537,765 | |
| -1 | -80,537,765 |
Now, we try dividing 80,537,765 by 3:
80,537,765 ÷ 3 = 26,845,921.6667
If the quotient is a whole number, then 3 and 26,845,921.6667 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 | 80,537,765 | |
| -1 | -80,537,765 |
Let's try dividing by 4:
80,537,765 ÷ 4 = 20,134,441.25
If the quotient is a whole number, then 4 and 20,134,441.25 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 | 80,537,765 | |
| -1 | 80,537,765 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 209,189 | 1,045,945 | 1,464,323 | 2,301,079 | 7,321,615 | 11,505,395 | 16,107,553 | 80,537,765 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -209,189 | -1,045,945 | -1,464,323 | -2,301,079 | -7,321,615 | -11,505,395 | -16,107,553 | -80,537,765 |
Here are some more numbers to try:
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