A:
Positive:
1 x 13111155 x 26222313 x 10085523 x 5700565 x 20171115 x 11401299 x 4385877 x 1495
Negative:
-1 x -1311115-5 x -262223-13 x -100855-23 x -57005-65 x -20171-115 x -11401-299 x -4385-877 x -1495
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 1,311,115, 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 | 1,311,115 | |
| -1 | -1,311,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,311,115.
Example:
1 x 1,311,115 = 1,311,115
and
-1 x -1,311,115 = 1,311,115
Notice both answers equal 1,311,115
With that explanation out of the way, let's continue. Next, we take the number 1,311,115 and divide it by 2:
1,311,115 ÷ 2 = 655,557.5
If the quotient is a whole number, then 2 and 655,557.5 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 | 1,311,115 | |
| -1 | -1,311,115 |
Now, we try dividing 1,311,115 by 3:
1,311,115 ÷ 3 = 437,038.3333
If the quotient is a whole number, then 3 and 437,038.3333 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 | 1,311,115 | |
| -1 | -1,311,115 |
Let's try dividing by 4:
1,311,115 ÷ 4 = 327,778.75
If the quotient is a whole number, then 4 and 327,778.75 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 | 1,311,115 | |
| -1 | 1,311,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 23 | 65 | 115 | 299 | 877 | 1,495 | 4,385 | 11,401 | 20,171 | 57,005 | 100,855 | 262,223 | 1,311,115 |
| -1 | -5 | -13 | -23 | -65 | -115 | -299 | -877 | -1,495 | -4,385 | -11,401 | -20,171 | -57,005 | -100,855 | -262,223 | -1,311,115 |
Here are some more numbers to try:
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