A:
Positive:
1 x 125392755 x 25078557 x 179132525 x 50157135 x 35826579 x 158725175 x 71653395 x 31745553 x 22675907 x 138251975 x 63492765 x 4535
Negative:
-1 x -12539275-5 x -2507855-7 x -1791325-25 x -501571-35 x -358265-79 x -158725-175 x -71653-395 x -31745-553 x -22675-907 x -13825-1975 x -6349-2765 x -4535
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 12,539,275, 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 | 12,539,275 | |
| -1 | -12,539,275 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,539,275.
Example:
1 x 12,539,275 = 12,539,275
and
-1 x -12,539,275 = 12,539,275
Notice both answers equal 12,539,275
With that explanation out of the way, let's continue. Next, we take the number 12,539,275 and divide it by 2:
12,539,275 ÷ 2 = 6,269,637.5
If the quotient is a whole number, then 2 and 6,269,637.5 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 | 12,539,275 | |
| -1 | -12,539,275 |
Now, we try dividing 12,539,275 by 3:
12,539,275 ÷ 3 = 4,179,758.3333
If the quotient is a whole number, then 3 and 4,179,758.3333 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 | 12,539,275 | |
| -1 | -12,539,275 |
Let's try dividing by 4:
12,539,275 ÷ 4 = 3,134,818.75
If the quotient is a whole number, then 4 and 3,134,818.75 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 | 12,539,275 | |
| -1 | 12,539,275 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 79 | 175 | 395 | 553 | 907 | 1,975 | 2,765 | 4,535 | 6,349 | 13,825 | 22,675 | 31,745 | 71,653 | 158,725 | 358,265 | 501,571 | 1,791,325 | 2,507,855 | 12,539,275 |
| -1 | -5 | -7 | -25 | -35 | -79 | -175 | -395 | -553 | -907 | -1,975 | -2,765 | -4,535 | -6,349 | -13,825 | -22,675 | -31,745 | -71,653 | -158,725 | -358,265 | -501,571 | -1,791,325 | -2,507,855 | -12,539,275 |
Here are some more numbers to try:
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