A:
Positive:
1 x 127848077 x 182640161 x 20958779 x 161833379 x 33733427 x 29941553 x 231192653 x 4819
Negative:
-1 x -12784807-7 x -1826401-61 x -209587-79 x -161833-379 x -33733-427 x -29941-553 x -23119-2653 x -4819
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 12,784,807, 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 | 12,784,807 | |
| -1 | -12,784,807 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,784,807.
Example:
1 x 12,784,807 = 12,784,807
and
-1 x -12,784,807 = 12,784,807
Notice both answers equal 12,784,807
With that explanation out of the way, let's continue. Next, we take the number 12,784,807 and divide it by 2:
12,784,807 ÷ 2 = 6,392,403.5
If the quotient is a whole number, then 2 and 6,392,403.5 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 | 12,784,807 | |
| -1 | -12,784,807 |
Now, we try dividing 12,784,807 by 3:
12,784,807 ÷ 3 = 4,261,602.3333
If the quotient is a whole number, then 3 and 4,261,602.3333 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 | 12,784,807 | |
| -1 | -12,784,807 |
Let's try dividing by 4:
12,784,807 ÷ 4 = 3,196,201.75
If the quotient is a whole number, then 4 and 3,196,201.75 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 | 12,784,807 | |
| -1 | 12,784,807 |
If you did it right, you will end up with this table:
| 1 | 7 | 61 | 79 | 379 | 427 | 553 | 2,653 | 4,819 | 23,119 | 29,941 | 33,733 | 161,833 | 209,587 | 1,826,401 | 12,784,807 |
| -1 | -7 | -61 | -79 | -379 | -427 | -553 | -2,653 | -4,819 | -23,119 | -29,941 | -33,733 | -161,833 | -209,587 | -1,826,401 | -12,784,807 |
Here are some more numbers to try:
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