A:
Positive:
1 x 127693155 x 255386313 x 98225565 x 196451151 x 84565755 x 169131301 x 98151963 x 6505
Negative:
-1 x -12769315-5 x -2553863-13 x -982255-65 x -196451-151 x -84565-755 x -16913-1301 x -9815-1963 x -6505
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 12,769,315, 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 | 12,769,315 | |
| -1 | -12,769,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,769,315.
Example:
1 x 12,769,315 = 12,769,315
and
-1 x -12,769,315 = 12,769,315
Notice both answers equal 12,769,315
With that explanation out of the way, let's continue. Next, we take the number 12,769,315 and divide it by 2:
12,769,315 ÷ 2 = 6,384,657.5
If the quotient is a whole number, then 2 and 6,384,657.5 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 | 12,769,315 | |
| -1 | -12,769,315 |
Now, we try dividing 12,769,315 by 3:
12,769,315 ÷ 3 = 4,256,438.3333
If the quotient is a whole number, then 3 and 4,256,438.3333 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 | 12,769,315 | |
| -1 | -12,769,315 |
Let's try dividing by 4:
12,769,315 ÷ 4 = 3,192,328.75
If the quotient is a whole number, then 4 and 3,192,328.75 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 | 12,769,315 | |
| -1 | 12,769,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 151 | 755 | 1,301 | 1,963 | 6,505 | 9,815 | 16,913 | 84,565 | 196,451 | 982,255 | 2,553,863 | 12,769,315 |
| -1 | -5 | -13 | -65 | -151 | -755 | -1,301 | -1,963 | -6,505 | -9,815 | -16,913 | -84,565 | -196,451 | -982,255 | -2,553,863 | -12,769,315 |
Here are some more numbers to try:
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