A:
Positive:
1 x 125463855 x 250927723 x 54549579 x 158815115 x 109099395 x 317631381 x 90851817 x 6905
Negative:
-1 x -12546385-5 x -2509277-23 x -545495-79 x -158815-115 x -109099-395 x -31763-1381 x -9085-1817 x -6905
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 12,546,385, 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 | 12,546,385 | |
| -1 | -12,546,385 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,546,385.
Example:
1 x 12,546,385 = 12,546,385
and
-1 x -12,546,385 = 12,546,385
Notice both answers equal 12,546,385
With that explanation out of the way, let's continue. Next, we take the number 12,546,385 and divide it by 2:
12,546,385 ÷ 2 = 6,273,192.5
If the quotient is a whole number, then 2 and 6,273,192.5 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 | 12,546,385 | |
| -1 | -12,546,385 |
Now, we try dividing 12,546,385 by 3:
12,546,385 ÷ 3 = 4,182,128.3333
If the quotient is a whole number, then 3 and 4,182,128.3333 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 | 12,546,385 | |
| -1 | -12,546,385 |
Let's try dividing by 4:
12,546,385 ÷ 4 = 3,136,596.25
If the quotient is a whole number, then 4 and 3,136,596.25 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 | 12,546,385 | |
| -1 | 12,546,385 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 79 | 115 | 395 | 1,381 | 1,817 | 6,905 | 9,085 | 31,763 | 109,099 | 158,815 | 545,495 | 2,509,277 | 12,546,385 |
| -1 | -5 | -23 | -79 | -115 | -395 | -1,381 | -1,817 | -6,905 | -9,085 | -31,763 | -109,099 | -158,815 | -545,495 | -2,509,277 | -12,546,385 |
Here are some more numbers to try:
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