A:
Positive:
1 x 252513177 x 360733113 x 194240949 x 51533391 x 277487343 x 73619637 x 39641809 x 312132401 x 105174459 x 5663
Negative:
-1 x -25251317-7 x -3607331-13 x -1942409-49 x -515333-91 x -277487-343 x -73619-637 x -39641-809 x -31213-2401 x -10517-4459 x -5663
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 25,251,317, 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 | 25,251,317 | |
| -1 | -25,251,317 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,251,317.
Example:
1 x 25,251,317 = 25,251,317
and
-1 x -25,251,317 = 25,251,317
Notice both answers equal 25,251,317
With that explanation out of the way, let's continue. Next, we take the number 25,251,317 and divide it by 2:
25,251,317 ÷ 2 = 12,625,658.5
If the quotient is a whole number, then 2 and 12,625,658.5 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 | 25,251,317 | |
| -1 | -25,251,317 |
Now, we try dividing 25,251,317 by 3:
25,251,317 ÷ 3 = 8,417,105.6667
If the quotient is a whole number, then 3 and 8,417,105.6667 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 | 25,251,317 | |
| -1 | -25,251,317 |
Let's try dividing by 4:
25,251,317 ÷ 4 = 6,312,829.25
If the quotient is a whole number, then 4 and 6,312,829.25 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 | 25,251,317 | |
| -1 | 25,251,317 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 49 | 91 | 343 | 637 | 809 | 2,401 | 4,459 | 5,663 | 10,517 | 31,213 | 39,641 | 73,619 | 277,487 | 515,333 | 1,942,409 | 3,607,331 | 25,251,317 |
| -1 | -7 | -13 | -49 | -91 | -343 | -637 | -809 | -2,401 | -4,459 | -5,663 | -10,517 | -31,213 | -39,641 | -73,619 | -277,487 | -515,333 | -1,942,409 | -3,607,331 | -25,251,317 |
Here are some more numbers to try:
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