A:
Positive:
1 x 12995155 x 2599037 x 18564535 x 37129107 x 12145347 x 3745535 x 2429749 x 1735
Negative:
-1 x -1299515-5 x -259903-7 x -185645-35 x -37129-107 x -12145-347 x -3745-535 x -2429-749 x -1735
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 1,299,515, 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 | 1,299,515 | |
| -1 | -1,299,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,299,515.
Example:
1 x 1,299,515 = 1,299,515
and
-1 x -1,299,515 = 1,299,515
Notice both answers equal 1,299,515
With that explanation out of the way, let's continue. Next, we take the number 1,299,515 and divide it by 2:
1,299,515 ÷ 2 = 649,757.5
If the quotient is a whole number, then 2 and 649,757.5 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 | 1,299,515 | |
| -1 | -1,299,515 |
Now, we try dividing 1,299,515 by 3:
1,299,515 ÷ 3 = 433,171.6667
If the quotient is a whole number, then 3 and 433,171.6667 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 | 1,299,515 | |
| -1 | -1,299,515 |
Let's try dividing by 4:
1,299,515 ÷ 4 = 324,878.75
If the quotient is a whole number, then 4 and 324,878.75 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 | 1,299,515 | |
| -1 | 1,299,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 107 | 347 | 535 | 749 | 1,735 | 2,429 | 3,745 | 12,145 | 37,129 | 185,645 | 259,903 | 1,299,515 |
| -1 | -5 | -7 | -35 | -107 | -347 | -535 | -749 | -1,735 | -2,429 | -3,745 | -12,145 | -37,129 | -185,645 | -259,903 | -1,299,515 |
Here are some more numbers to try:
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