A:
Positive:
1 x 131460497 x 187800717 x 77329761 x 215509119 x 110471427 x 307871037 x 126771811 x 7259
Negative:
-1 x -13146049-7 x -1878007-17 x -773297-61 x -215509-119 x -110471-427 x -30787-1037 x -12677-1811 x -7259
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 13,146,049, 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 | 13,146,049 | |
| -1 | -13,146,049 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,146,049.
Example:
1 x 13,146,049 = 13,146,049
and
-1 x -13,146,049 = 13,146,049
Notice both answers equal 13,146,049
With that explanation out of the way, let's continue. Next, we take the number 13,146,049 and divide it by 2:
13,146,049 ÷ 2 = 6,573,024.5
If the quotient is a whole number, then 2 and 6,573,024.5 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 | 13,146,049 | |
| -1 | -13,146,049 |
Now, we try dividing 13,146,049 by 3:
13,146,049 ÷ 3 = 4,382,016.3333
If the quotient is a whole number, then 3 and 4,382,016.3333 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 | 13,146,049 | |
| -1 | -13,146,049 |
Let's try dividing by 4:
13,146,049 ÷ 4 = 3,286,512.25
If the quotient is a whole number, then 4 and 3,286,512.25 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 | 13,146,049 | |
| -1 | 13,146,049 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 61 | 119 | 427 | 1,037 | 1,811 | 7,259 | 12,677 | 30,787 | 110,471 | 215,509 | 773,297 | 1,878,007 | 13,146,049 |
| -1 | -7 | -17 | -61 | -119 | -427 | -1,037 | -1,811 | -7,259 | -12,677 | -30,787 | -110,471 | -215,509 | -773,297 | -1,878,007 | -13,146,049 |
Here are some more numbers to try:
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