A:
Positive:
1 x 31296655 x 6259337 x 44709511 x 28451535 x 8941955 x 5690377 x 40645121 x 25865385 x 8129605 x 5173739 x 4235847 x 3695
Negative:
-1 x -3129665-5 x -625933-7 x -447095-11 x -284515-35 x -89419-55 x -56903-77 x -40645-121 x -25865-385 x -8129-605 x -5173-739 x -4235-847 x -3695
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 3,129,665, 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 | 3,129,665 | |
| -1 | -3,129,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,129,665.
Example:
1 x 3,129,665 = 3,129,665
and
-1 x -3,129,665 = 3,129,665
Notice both answers equal 3,129,665
With that explanation out of the way, let's continue. Next, we take the number 3,129,665 and divide it by 2:
3,129,665 ÷ 2 = 1,564,832.5
If the quotient is a whole number, then 2 and 1,564,832.5 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 | 3,129,665 | |
| -1 | -3,129,665 |
Now, we try dividing 3,129,665 by 3:
3,129,665 ÷ 3 = 1,043,221.6667
If the quotient is a whole number, then 3 and 1,043,221.6667 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 | 3,129,665 | |
| -1 | -3,129,665 |
Let's try dividing by 4:
3,129,665 ÷ 4 = 782,416.25
If the quotient is a whole number, then 4 and 782,416.25 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 | 3,129,665 | |
| -1 | 3,129,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 121 | 385 | 605 | 739 | 847 | 3,695 | 4,235 | 5,173 | 8,129 | 25,865 | 40,645 | 56,903 | 89,419 | 284,515 | 447,095 | 625,933 | 3,129,665 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -121 | -385 | -605 | -739 | -847 | -3,695 | -4,235 | -5,173 | -8,129 | -25,865 | -40,645 | -56,903 | -89,419 | -284,515 | -447,095 | -625,933 | -3,129,665 |
Here are some more numbers to try:
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