A:
Positive:
1 x 125272155 x 250544317 x 73689585 x 147379293 x 42755503 x 249051465 x 85512515 x 4981
Negative:
-1 x -12527215-5 x -2505443-17 x -736895-85 x -147379-293 x -42755-503 x -24905-1465 x -8551-2515 x -4981
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 12,527,215, 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 | 12,527,215 | |
| -1 | -12,527,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,527,215.
Example:
1 x 12,527,215 = 12,527,215
and
-1 x -12,527,215 = 12,527,215
Notice both answers equal 12,527,215
With that explanation out of the way, let's continue. Next, we take the number 12,527,215 and divide it by 2:
12,527,215 ÷ 2 = 6,263,607.5
If the quotient is a whole number, then 2 and 6,263,607.5 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 | 12,527,215 | |
| -1 | -12,527,215 |
Now, we try dividing 12,527,215 by 3:
12,527,215 ÷ 3 = 4,175,738.3333
If the quotient is a whole number, then 3 and 4,175,738.3333 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 | 12,527,215 | |
| -1 | -12,527,215 |
Let's try dividing by 4:
12,527,215 ÷ 4 = 3,131,803.75
If the quotient is a whole number, then 4 and 3,131,803.75 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 | 12,527,215 | |
| -1 | 12,527,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 293 | 503 | 1,465 | 2,515 | 4,981 | 8,551 | 24,905 | 42,755 | 147,379 | 736,895 | 2,505,443 | 12,527,215 |
| -1 | -5 | -17 | -85 | -293 | -503 | -1,465 | -2,515 | -4,981 | -8,551 | -24,905 | -42,755 | -147,379 | -736,895 | -2,505,443 | -12,527,215 |
Here are some more numbers to try:
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