A:
Positive:
1 x 126455455 x 252910911 x 114959519 x 66555555 x 22991995 x 133111209 x 605051045 x 12101
Negative:
-1 x -12645545-5 x -2529109-11 x -1149595-19 x -665555-55 x -229919-95 x -133111-209 x -60505-1045 x -12101
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 12,645,545, 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 | 12,645,545 | |
| -1 | -12,645,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,645,545.
Example:
1 x 12,645,545 = 12,645,545
and
-1 x -12,645,545 = 12,645,545
Notice both answers equal 12,645,545
With that explanation out of the way, let's continue. Next, we take the number 12,645,545 and divide it by 2:
12,645,545 ÷ 2 = 6,322,772.5
If the quotient is a whole number, then 2 and 6,322,772.5 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 | 12,645,545 | |
| -1 | -12,645,545 |
Now, we try dividing 12,645,545 by 3:
12,645,545 ÷ 3 = 4,215,181.6667
If the quotient is a whole number, then 3 and 4,215,181.6667 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 | 12,645,545 | |
| -1 | -12,645,545 |
Let's try dividing by 4:
12,645,545 ÷ 4 = 3,161,386.25
If the quotient is a whole number, then 4 and 3,161,386.25 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 | 12,645,545 | |
| -1 | 12,645,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 55 | 95 | 209 | 1,045 | 12,101 | 60,505 | 133,111 | 229,919 | 665,555 | 1,149,595 | 2,529,109 | 12,645,545 |
| -1 | -5 | -11 | -19 | -55 | -95 | -209 | -1,045 | -12,101 | -60,505 | -133,111 | -229,919 | -665,555 | -1,149,595 | -2,529,109 | -12,645,545 |
Here are some more numbers to try:
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