A:
Positive:
1 x 1251875911 x 113806953 x 236203109 x 114851197 x 63547583 x 214731199 x 104412167 x 5777
Negative:
-1 x -12518759-11 x -1138069-53 x -236203-109 x -114851-197 x -63547-583 x -21473-1199 x -10441-2167 x -5777
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 12,518,759, 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 | 12,518,759 | |
| -1 | -12,518,759 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,518,759.
Example:
1 x 12,518,759 = 12,518,759
and
-1 x -12,518,759 = 12,518,759
Notice both answers equal 12,518,759
With that explanation out of the way, let's continue. Next, we take the number 12,518,759 and divide it by 2:
12,518,759 ÷ 2 = 6,259,379.5
If the quotient is a whole number, then 2 and 6,259,379.5 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 | 12,518,759 | |
| -1 | -12,518,759 |
Now, we try dividing 12,518,759 by 3:
12,518,759 ÷ 3 = 4,172,919.6667
If the quotient is a whole number, then 3 and 4,172,919.6667 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 | 12,518,759 | |
| -1 | -12,518,759 |
Let's try dividing by 4:
12,518,759 ÷ 4 = 3,129,689.75
If the quotient is a whole number, then 4 and 3,129,689.75 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 | 12,518,759 | |
| -1 | 12,518,759 |
If you did it right, you will end up with this table:
| 1 | 11 | 53 | 109 | 197 | 583 | 1,199 | 2,167 | 5,777 | 10,441 | 21,473 | 63,547 | 114,851 | 236,203 | 1,138,069 | 12,518,759 |
| -1 | -11 | -53 | -109 | -197 | -583 | -1,199 | -2,167 | -5,777 | -10,441 | -21,473 | -63,547 | -114,851 | -236,203 | -1,138,069 | -12,518,759 |
Here are some more numbers to try:
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