A:
Positive:
1 x 800502855 x 160100577 x 1143575535 x 2287151643 x 1244953215 x 248993557 x 225054501 x 17785
Negative:
-1 x -80050285-5 x -16010057-7 x -11435755-35 x -2287151-643 x -124495-3215 x -24899-3557 x -22505-4501 x -17785
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 80,050,285, 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 | 80,050,285 | |
| -1 | -80,050,285 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 80,050,285.
Example:
1 x 80,050,285 = 80,050,285
and
-1 x -80,050,285 = 80,050,285
Notice both answers equal 80,050,285
With that explanation out of the way, let's continue. Next, we take the number 80,050,285 and divide it by 2:
80,050,285 ÷ 2 = 40,025,142.5
If the quotient is a whole number, then 2 and 40,025,142.5 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 | 80,050,285 | |
| -1 | -80,050,285 |
Now, we try dividing 80,050,285 by 3:
80,050,285 ÷ 3 = 26,683,428.3333
If the quotient is a whole number, then 3 and 26,683,428.3333 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 | 80,050,285 | |
| -1 | -80,050,285 |
Let's try dividing by 4:
80,050,285 ÷ 4 = 20,012,571.25
If the quotient is a whole number, then 4 and 20,012,571.25 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 | 80,050,285 | |
| -1 | 80,050,285 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 643 | 3,215 | 3,557 | 4,501 | 17,785 | 22,505 | 24,899 | 124,495 | 2,287,151 | 11,435,755 | 16,010,057 | 80,050,285 |
| -1 | -5 | -7 | -35 | -643 | -3,215 | -3,557 | -4,501 | -17,785 | -22,505 | -24,899 | -124,495 | -2,287,151 | -11,435,755 | -16,010,057 | -80,050,285 |
Here are some more numbers to try:
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