A:
Positive:
1 x 128862655 x 25772537 x 184089535 x 36817949 x 262985149 x 86485245 x 52597353 x 36505745 x 172971043 x 123551765 x 73012471 x 5215
Negative:
-1 x -12886265-5 x -2577253-7 x -1840895-35 x -368179-49 x -262985-149 x -86485-245 x -52597-353 x -36505-745 x -17297-1043 x -12355-1765 x -7301-2471 x -5215
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 12,886,265, 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 | 12,886,265 | |
| -1 | -12,886,265 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,886,265.
Example:
1 x 12,886,265 = 12,886,265
and
-1 x -12,886,265 = 12,886,265
Notice both answers equal 12,886,265
With that explanation out of the way, let's continue. Next, we take the number 12,886,265 and divide it by 2:
12,886,265 ÷ 2 = 6,443,132.5
If the quotient is a whole number, then 2 and 6,443,132.5 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 | 12,886,265 | |
| -1 | -12,886,265 |
Now, we try dividing 12,886,265 by 3:
12,886,265 ÷ 3 = 4,295,421.6667
If the quotient is a whole number, then 3 and 4,295,421.6667 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 | 12,886,265 | |
| -1 | -12,886,265 |
Let's try dividing by 4:
12,886,265 ÷ 4 = 3,221,566.25
If the quotient is a whole number, then 4 and 3,221,566.25 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 | 12,886,265 | |
| -1 | 12,886,265 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 149 | 245 | 353 | 745 | 1,043 | 1,765 | 2,471 | 5,215 | 7,301 | 12,355 | 17,297 | 36,505 | 52,597 | 86,485 | 262,985 | 368,179 | 1,840,895 | 2,577,253 | 12,886,265 |
| -1 | -5 | -7 | -35 | -49 | -149 | -245 | -353 | -745 | -1,043 | -1,765 | -2,471 | -5,215 | -7,301 | -12,355 | -17,297 | -36,505 | -52,597 | -86,485 | -262,985 | -368,179 | -1,840,895 | -2,577,253 | -12,886,265 |
Here are some more numbers to try:
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