A:
Positive:
1 x 39187755 x 7837557 x 55982525 x 15675135 x 11196549 x 79975175 x 22393245 x 15995343 x 11425457 x 85751225 x 31991715 x 2285
Negative:
-1 x -3918775-5 x -783755-7 x -559825-25 x -156751-35 x -111965-49 x -79975-175 x -22393-245 x -15995-343 x -11425-457 x -8575-1225 x -3199-1715 x -2285
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 3,918,775, 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 | 3,918,775 | |
| -1 | -3,918,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,918,775.
Example:
1 x 3,918,775 = 3,918,775
and
-1 x -3,918,775 = 3,918,775
Notice both answers equal 3,918,775
With that explanation out of the way, let's continue. Next, we take the number 3,918,775 and divide it by 2:
3,918,775 ÷ 2 = 1,959,387.5
If the quotient is a whole number, then 2 and 1,959,387.5 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 | 3,918,775 | |
| -1 | -3,918,775 |
Now, we try dividing 3,918,775 by 3:
3,918,775 ÷ 3 = 1,306,258.3333
If the quotient is a whole number, then 3 and 1,306,258.3333 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 | 3,918,775 | |
| -1 | -3,918,775 |
Let's try dividing by 4:
3,918,775 ÷ 4 = 979,693.75
If the quotient is a whole number, then 4 and 979,693.75 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 | 3,918,775 | |
| -1 | 3,918,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 49 | 175 | 245 | 343 | 457 | 1,225 | 1,715 | 2,285 | 3,199 | 8,575 | 11,425 | 15,995 | 22,393 | 79,975 | 111,965 | 156,751 | 559,825 | 783,755 | 3,918,775 |
| -1 | -5 | -7 | -25 | -35 | -49 | -175 | -245 | -343 | -457 | -1,225 | -1,715 | -2,285 | -3,199 | -8,575 | -11,425 | -15,995 | -22,393 | -79,975 | -111,965 | -156,751 | -559,825 | -783,755 | -3,918,775 |
Here are some more numbers to try:
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