A:
Positive:
1 x 257516637 x 367880983 x 310261127 x 202769349 x 73787581 x 44323889 x 289672443 x 10541
Negative:
-1 x -25751663-7 x -3678809-83 x -310261-127 x -202769-349 x -73787-581 x -44323-889 x -28967-2443 x -10541
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 25,751,663, 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 | 25,751,663 | |
| -1 | -25,751,663 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,751,663.
Example:
1 x 25,751,663 = 25,751,663
and
-1 x -25,751,663 = 25,751,663
Notice both answers equal 25,751,663
With that explanation out of the way, let's continue. Next, we take the number 25,751,663 and divide it by 2:
25,751,663 ÷ 2 = 12,875,831.5
If the quotient is a whole number, then 2 and 12,875,831.5 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 | 25,751,663 | |
| -1 | -25,751,663 |
Now, we try dividing 25,751,663 by 3:
25,751,663 ÷ 3 = 8,583,887.6667
If the quotient is a whole number, then 3 and 8,583,887.6667 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 | 25,751,663 | |
| -1 | -25,751,663 |
Let's try dividing by 4:
25,751,663 ÷ 4 = 6,437,915.75
If the quotient is a whole number, then 4 and 6,437,915.75 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 | 25,751,663 | |
| -1 | 25,751,663 |
If you did it right, you will end up with this table:
| 1 | 7 | 83 | 127 | 349 | 581 | 889 | 2,443 | 10,541 | 28,967 | 44,323 | 73,787 | 202,769 | 310,261 | 3,678,809 | 25,751,663 |
| -1 | -7 | -83 | -127 | -349 | -581 | -889 | -2,443 | -10,541 | -28,967 | -44,323 | -73,787 | -202,769 | -310,261 | -3,678,809 | -25,751,663 |
Here are some more numbers to try:
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