A:
Positive:
1 x 127653897 x 182362713 x 98195391 x 140279151 x 84539929 x 137411057 x 120771963 x 6503
Negative:
-1 x -12765389-7 x -1823627-13 x -981953-91 x -140279-151 x -84539-929 x -13741-1057 x -12077-1963 x -6503
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 12,765,389, 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 | 12,765,389 | |
| -1 | -12,765,389 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,765,389.
Example:
1 x 12,765,389 = 12,765,389
and
-1 x -12,765,389 = 12,765,389
Notice both answers equal 12,765,389
With that explanation out of the way, let's continue. Next, we take the number 12,765,389 and divide it by 2:
12,765,389 ÷ 2 = 6,382,694.5
If the quotient is a whole number, then 2 and 6,382,694.5 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 | 12,765,389 | |
| -1 | -12,765,389 |
Now, we try dividing 12,765,389 by 3:
12,765,389 ÷ 3 = 4,255,129.6667
If the quotient is a whole number, then 3 and 4,255,129.6667 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 | 12,765,389 | |
| -1 | -12,765,389 |
Let's try dividing by 4:
12,765,389 ÷ 4 = 3,191,347.25
If the quotient is a whole number, then 4 and 3,191,347.25 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 | 12,765,389 | |
| -1 | 12,765,389 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 151 | 929 | 1,057 | 1,963 | 6,503 | 12,077 | 13,741 | 84,539 | 140,279 | 981,953 | 1,823,627 | 12,765,389 |
| -1 | -7 | -13 | -91 | -151 | -929 | -1,057 | -1,963 | -6,503 | -12,077 | -13,741 | -84,539 | -140,279 | -981,953 | -1,823,627 | -12,765,389 |
Here are some more numbers to try:
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