A:
Positive:
1 x 800665455 x 1601330913 x 615896565 x 1231793131 x 611195655 x 1222391703 x 470158515 x 9403
Negative:
-1 x -80066545-5 x -16013309-13 x -6158965-65 x -1231793-131 x -611195-655 x -122239-1703 x -47015-8515 x -9403
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 80,066,545, 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 | 80,066,545 | |
| -1 | -80,066,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 80,066,545.
Example:
1 x 80,066,545 = 80,066,545
and
-1 x -80,066,545 = 80,066,545
Notice both answers equal 80,066,545
With that explanation out of the way, let's continue. Next, we take the number 80,066,545 and divide it by 2:
80,066,545 ÷ 2 = 40,033,272.5
If the quotient is a whole number, then 2 and 40,033,272.5 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 | 80,066,545 | |
| -1 | -80,066,545 |
Now, we try dividing 80,066,545 by 3:
80,066,545 ÷ 3 = 26,688,848.3333
If the quotient is a whole number, then 3 and 26,688,848.3333 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 | 80,066,545 | |
| -1 | -80,066,545 |
Let's try dividing by 4:
80,066,545 ÷ 4 = 20,016,636.25
If the quotient is a whole number, then 4 and 20,016,636.25 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 | 80,066,545 | |
| -1 | 80,066,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 131 | 655 | 1,703 | 8,515 | 9,403 | 47,015 | 122,239 | 611,195 | 1,231,793 | 6,158,965 | 16,013,309 | 80,066,545 |
| -1 | -5 | -13 | -65 | -131 | -655 | -1,703 | -8,515 | -9,403 | -47,015 | -122,239 | -611,195 | -1,231,793 | -6,158,965 | -16,013,309 | -80,066,545 |
Here are some more numbers to try:
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