A:
Positive:
1 x 5151717123 x 223987767 x 768913101 x 510071331 x 1556411541 x 334312323 x 221776767 x 7613
Negative:
-1 x -51517171-23 x -2239877-67 x -768913-101 x -510071-331 x -155641-1541 x -33431-2323 x -22177-6767 x -7613
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 51,517,171, 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 | 51,517,171 | |
| -1 | -51,517,171 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,517,171.
Example:
1 x 51,517,171 = 51,517,171
and
-1 x -51,517,171 = 51,517,171
Notice both answers equal 51,517,171
With that explanation out of the way, let's continue. Next, we take the number 51,517,171 and divide it by 2:
51,517,171 ÷ 2 = 25,758,585.5
If the quotient is a whole number, then 2 and 25,758,585.5 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 | 51,517,171 | |
| -1 | -51,517,171 |
Now, we try dividing 51,517,171 by 3:
51,517,171 ÷ 3 = 17,172,390.3333
If the quotient is a whole number, then 3 and 17,172,390.3333 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 | 51,517,171 | |
| -1 | -51,517,171 |
Let's try dividing by 4:
51,517,171 ÷ 4 = 12,879,292.75
If the quotient is a whole number, then 4 and 12,879,292.75 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 | 51,517,171 | |
| -1 | 51,517,171 |
If you did it right, you will end up with this table:
| 1 | 23 | 67 | 101 | 331 | 1,541 | 2,323 | 6,767 | 7,613 | 22,177 | 33,431 | 155,641 | 510,071 | 768,913 | 2,239,877 | 51,517,171 |
| -1 | -23 | -67 | -101 | -331 | -1,541 | -2,323 | -6,767 | -7,613 | -22,177 | -33,431 | -155,641 | -510,071 | -768,913 | -2,239,877 | -51,517,171 |
Here are some more numbers to try:
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