A:
Positive:
1 x 134406655 x 26881337 x 192009535 x 38401979 x 170135395 x 34027553 x 243052765 x 4861
Negative:
-1 x -13440665-5 x -2688133-7 x -1920095-35 x -384019-79 x -170135-395 x -34027-553 x -24305-2765 x -4861
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 13,440,665, 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 | 13,440,665 | |
| -1 | -13,440,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,440,665.
Example:
1 x 13,440,665 = 13,440,665
and
-1 x -13,440,665 = 13,440,665
Notice both answers equal 13,440,665
With that explanation out of the way, let's continue. Next, we take the number 13,440,665 and divide it by 2:
13,440,665 ÷ 2 = 6,720,332.5
If the quotient is a whole number, then 2 and 6,720,332.5 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 | 13,440,665 | |
| -1 | -13,440,665 |
Now, we try dividing 13,440,665 by 3:
13,440,665 ÷ 3 = 4,480,221.6667
If the quotient is a whole number, then 3 and 4,480,221.6667 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 | 13,440,665 | |
| -1 | -13,440,665 |
Let's try dividing by 4:
13,440,665 ÷ 4 = 3,360,166.25
If the quotient is a whole number, then 4 and 3,360,166.25 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 | 13,440,665 | |
| -1 | 13,440,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 79 | 395 | 553 | 2,765 | 4,861 | 24,305 | 34,027 | 170,135 | 384,019 | 1,920,095 | 2,688,133 | 13,440,665 |
| -1 | -5 | -7 | -35 | -79 | -395 | -553 | -2,765 | -4,861 | -24,305 | -34,027 | -170,135 | -384,019 | -1,920,095 | -2,688,133 | -13,440,665 |
Here are some more numbers to try:
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