A:
Positive:
1 x 1593126117 x 93713347 x 338963127 x 125443157 x 101473799 x 199392159 x 73792669 x 5969
Negative:
-1 x -15931261-17 x -937133-47 x -338963-127 x -125443-157 x -101473-799 x -19939-2159 x -7379-2669 x -5969
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 15,931,261, 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 | 15,931,261 | |
| -1 | -15,931,261 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,931,261.
Example:
1 x 15,931,261 = 15,931,261
and
-1 x -15,931,261 = 15,931,261
Notice both answers equal 15,931,261
With that explanation out of the way, let's continue. Next, we take the number 15,931,261 and divide it by 2:
15,931,261 ÷ 2 = 7,965,630.5
If the quotient is a whole number, then 2 and 7,965,630.5 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 | 15,931,261 | |
| -1 | -15,931,261 |
Now, we try dividing 15,931,261 by 3:
15,931,261 ÷ 3 = 5,310,420.3333
If the quotient is a whole number, then 3 and 5,310,420.3333 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 | 15,931,261 | |
| -1 | -15,931,261 |
Let's try dividing by 4:
15,931,261 ÷ 4 = 3,982,815.25
If the quotient is a whole number, then 4 and 3,982,815.25 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 | 15,931,261 | |
| -1 | 15,931,261 |
If you did it right, you will end up with this table:
| 1 | 17 | 47 | 127 | 157 | 799 | 2,159 | 2,669 | 5,969 | 7,379 | 19,939 | 101,473 | 125,443 | 338,963 | 937,133 | 15,931,261 |
| -1 | -17 | -47 | -127 | -157 | -799 | -2,159 | -2,669 | -5,969 | -7,379 | -19,939 | -101,473 | -125,443 | -338,963 | -937,133 | -15,931,261 |
Here are some more numbers to try:
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