A:
Positive:
1 x 156163855 x 312327719 x 82191589 x 17546595 x 164383445 x 350931691 x 92351847 x 8455
Negative:
-1 x -15616385-5 x -3123277-19 x -821915-89 x -175465-95 x -164383-445 x -35093-1691 x -9235-1847 x -8455
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 15,616,385, 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 | 15,616,385 | |
| -1 | -15,616,385 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,616,385.
Example:
1 x 15,616,385 = 15,616,385
and
-1 x -15,616,385 = 15,616,385
Notice both answers equal 15,616,385
With that explanation out of the way, let's continue. Next, we take the number 15,616,385 and divide it by 2:
15,616,385 ÷ 2 = 7,808,192.5
If the quotient is a whole number, then 2 and 7,808,192.5 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 | 15,616,385 | |
| -1 | -15,616,385 |
Now, we try dividing 15,616,385 by 3:
15,616,385 ÷ 3 = 5,205,461.6667
If the quotient is a whole number, then 3 and 5,205,461.6667 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 | 15,616,385 | |
| -1 | -15,616,385 |
Let's try dividing by 4:
15,616,385 ÷ 4 = 3,904,096.25
If the quotient is a whole number, then 4 and 3,904,096.25 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 | 15,616,385 | |
| -1 | 15,616,385 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 89 | 95 | 445 | 1,691 | 1,847 | 8,455 | 9,235 | 35,093 | 164,383 | 175,465 | 821,915 | 3,123,277 | 15,616,385 |
| -1 | -5 | -19 | -89 | -95 | -445 | -1,691 | -1,847 | -8,455 | -9,235 | -35,093 | -164,383 | -175,465 | -821,915 | -3,123,277 | -15,616,385 |
Here are some more numbers to try:
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