A:
Positive:
1 x 31187755 x 62375511 x 28352525 x 12475155 x 56705121 x 25775275 x 11341605 x 51551031 x 3025
Negative:
-1 x -3118775-5 x -623755-11 x -283525-25 x -124751-55 x -56705-121 x -25775-275 x -11341-605 x -5155-1031 x -3025
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 3,118,775, 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 | 3,118,775 | |
| -1 | -3,118,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,118,775.
Example:
1 x 3,118,775 = 3,118,775
and
-1 x -3,118,775 = 3,118,775
Notice both answers equal 3,118,775
With that explanation out of the way, let's continue. Next, we take the number 3,118,775 and divide it by 2:
3,118,775 ÷ 2 = 1,559,387.5
If the quotient is a whole number, then 2 and 1,559,387.5 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 | 3,118,775 | |
| -1 | -3,118,775 |
Now, we try dividing 3,118,775 by 3:
3,118,775 ÷ 3 = 1,039,591.6667
If the quotient is a whole number, then 3 and 1,039,591.6667 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 | 3,118,775 | |
| -1 | -3,118,775 |
Let's try dividing by 4:
3,118,775 ÷ 4 = 779,693.75
If the quotient is a whole number, then 4 and 779,693.75 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 | 3,118,775 | |
| -1 | 3,118,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 121 | 275 | 605 | 1,031 | 3,025 | 5,155 | 11,341 | 25,775 | 56,705 | 124,751 | 283,525 | 623,755 | 3,118,775 |
| -1 | -5 | -11 | -25 | -55 | -121 | -275 | -605 | -1,031 | -3,025 | -5,155 | -11,341 | -25,775 | -56,705 | -124,751 | -283,525 | -623,755 | -3,118,775 |
Here are some more numbers to try:
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