A:
Positive:
1 x 1254210111 x 114019113 x 964777143 x 87707229 x 54769383 x 327472519 x 49792977 x 4213
Negative:
-1 x -12542101-11 x -1140191-13 x -964777-143 x -87707-229 x -54769-383 x -32747-2519 x -4979-2977 x -4213
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 12,542,101, 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 | 12,542,101 | |
| -1 | -12,542,101 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,542,101.
Example:
1 x 12,542,101 = 12,542,101
and
-1 x -12,542,101 = 12,542,101
Notice both answers equal 12,542,101
With that explanation out of the way, let's continue. Next, we take the number 12,542,101 and divide it by 2:
12,542,101 ÷ 2 = 6,271,050.5
If the quotient is a whole number, then 2 and 6,271,050.5 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 | 12,542,101 | |
| -1 | -12,542,101 |
Now, we try dividing 12,542,101 by 3:
12,542,101 ÷ 3 = 4,180,700.3333
If the quotient is a whole number, then 3 and 4,180,700.3333 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 | 12,542,101 | |
| -1 | -12,542,101 |
Let's try dividing by 4:
12,542,101 ÷ 4 = 3,135,525.25
If the quotient is a whole number, then 4 and 3,135,525.25 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 | 12,542,101 | |
| -1 | 12,542,101 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 229 | 383 | 2,519 | 2,977 | 4,213 | 4,979 | 32,747 | 54,769 | 87,707 | 964,777 | 1,140,191 | 12,542,101 |
| -1 | -11 | -13 | -143 | -229 | -383 | -2,519 | -2,977 | -4,213 | -4,979 | -32,747 | -54,769 | -87,707 | -964,777 | -1,140,191 | -12,542,101 |
Here are some more numbers to try:
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