A:
Positive:
1 x 317454855 x 634909719 x 167081595 x 334163151 x 210235755 x 420472213 x 143452869 x 11065
Negative:
-1 x -31745485-5 x -6349097-19 x -1670815-95 x -334163-151 x -210235-755 x -42047-2213 x -14345-2869 x -11065
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 31,745,485, 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 | 31,745,485 | |
| -1 | -31,745,485 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,745,485.
Example:
1 x 31,745,485 = 31,745,485
and
-1 x -31,745,485 = 31,745,485
Notice both answers equal 31,745,485
With that explanation out of the way, let's continue. Next, we take the number 31,745,485 and divide it by 2:
31,745,485 ÷ 2 = 15,872,742.5
If the quotient is a whole number, then 2 and 15,872,742.5 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 | 31,745,485 | |
| -1 | -31,745,485 |
Now, we try dividing 31,745,485 by 3:
31,745,485 ÷ 3 = 10,581,828.3333
If the quotient is a whole number, then 3 and 10,581,828.3333 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 | 31,745,485 | |
| -1 | -31,745,485 |
Let's try dividing by 4:
31,745,485 ÷ 4 = 7,936,371.25
If the quotient is a whole number, then 4 and 7,936,371.25 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 | 31,745,485 | |
| -1 | 31,745,485 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 151 | 755 | 2,213 | 2,869 | 11,065 | 14,345 | 42,047 | 210,235 | 334,163 | 1,670,815 | 6,349,097 | 31,745,485 |
| -1 | -5 | -19 | -95 | -151 | -755 | -2,213 | -2,869 | -11,065 | -14,345 | -42,047 | -210,235 | -334,163 | -1,670,815 | -6,349,097 | -31,745,485 |
Here are some more numbers to try:
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