A:
Positive:
1 x 8038060717 x 472827123 x 3494809167 x 481321391 x 2055771231 x 652972839 x 283133841 x 20927
Negative:
-1 x -80380607-17 x -4728271-23 x -3494809-167 x -481321-391 x -205577-1231 x -65297-2839 x -28313-3841 x -20927
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 80,380,607, 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 | 80,380,607 | |
| -1 | -80,380,607 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 80,380,607.
Example:
1 x 80,380,607 = 80,380,607
and
-1 x -80,380,607 = 80,380,607
Notice both answers equal 80,380,607
With that explanation out of the way, let's continue. Next, we take the number 80,380,607 and divide it by 2:
80,380,607 ÷ 2 = 40,190,303.5
If the quotient is a whole number, then 2 and 40,190,303.5 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 | 80,380,607 | |
| -1 | -80,380,607 |
Now, we try dividing 80,380,607 by 3:
80,380,607 ÷ 3 = 26,793,535.6667
If the quotient is a whole number, then 3 and 26,793,535.6667 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 | 80,380,607 | |
| -1 | -80,380,607 |
Let's try dividing by 4:
80,380,607 ÷ 4 = 20,095,151.75
If the quotient is a whole number, then 4 and 20,095,151.75 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 | 80,380,607 | |
| -1 | 80,380,607 |
If you did it right, you will end up with this table:
| 1 | 17 | 23 | 167 | 391 | 1,231 | 2,839 | 3,841 | 20,927 | 28,313 | 65,297 | 205,577 | 481,321 | 3,494,809 | 4,728,271 | 80,380,607 |
| -1 | -17 | -23 | -167 | -391 | -1,231 | -2,839 | -3,841 | -20,927 | -28,313 | -65,297 | -205,577 | -481,321 | -3,494,809 | -4,728,271 | -80,380,607 |
Here are some more numbers to try:
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