A:
Positive:
1 x 150835155 x 301670323 x 65580531 x 486565115 x 131161155 x 97313713 x 211553565 x 4231
Negative:
-1 x -15083515-5 x -3016703-23 x -655805-31 x -486565-115 x -131161-155 x -97313-713 x -21155-3565 x -4231
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 15,083,515, 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 | 15,083,515 | |
| -1 | -15,083,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,083,515.
Example:
1 x 15,083,515 = 15,083,515
and
-1 x -15,083,515 = 15,083,515
Notice both answers equal 15,083,515
With that explanation out of the way, let's continue. Next, we take the number 15,083,515 and divide it by 2:
15,083,515 ÷ 2 = 7,541,757.5
If the quotient is a whole number, then 2 and 7,541,757.5 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 | 15,083,515 | |
| -1 | -15,083,515 |
Now, we try dividing 15,083,515 by 3:
15,083,515 ÷ 3 = 5,027,838.3333
If the quotient is a whole number, then 3 and 5,027,838.3333 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 | 15,083,515 | |
| -1 | -15,083,515 |
Let's try dividing by 4:
15,083,515 ÷ 4 = 3,770,878.75
If the quotient is a whole number, then 4 and 3,770,878.75 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 | 15,083,515 | |
| -1 | 15,083,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 31 | 115 | 155 | 713 | 3,565 | 4,231 | 21,155 | 97,313 | 131,161 | 486,565 | 655,805 | 3,016,703 | 15,083,515 |
| -1 | -5 | -23 | -31 | -115 | -155 | -713 | -3,565 | -4,231 | -21,155 | -97,313 | -131,161 | -486,565 | -655,805 | -3,016,703 | -15,083,515 |
Here are some more numbers to try:
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