A:
Positive:
1 x 257076055 x 51415217 x 367251511 x 233705535 x 73450349 x 52464555 x 46741177 x 333865245 x 104929385 x 66773539 x 476952695 x 9539
Negative:
-1 x -25707605-5 x -5141521-7 x -3672515-11 x -2337055-35 x -734503-49 x -524645-55 x -467411-77 x -333865-245 x -104929-385 x -66773-539 x -47695-2695 x -9539
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 25,707,605, 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 | 25,707,605 | |
| -1 | -25,707,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,707,605.
Example:
1 x 25,707,605 = 25,707,605
and
-1 x -25,707,605 = 25,707,605
Notice both answers equal 25,707,605
With that explanation out of the way, let's continue. Next, we take the number 25,707,605 and divide it by 2:
25,707,605 ÷ 2 = 12,853,802.5
If the quotient is a whole number, then 2 and 12,853,802.5 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 | 25,707,605 | |
| -1 | -25,707,605 |
Now, we try dividing 25,707,605 by 3:
25,707,605 ÷ 3 = 8,569,201.6667
If the quotient is a whole number, then 3 and 8,569,201.6667 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 | 25,707,605 | |
| -1 | -25,707,605 |
Let's try dividing by 4:
25,707,605 ÷ 4 = 6,426,901.25
If the quotient is a whole number, then 4 and 6,426,901.25 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 | 25,707,605 | |
| -1 | 25,707,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 49 | 55 | 77 | 245 | 385 | 539 | 2,695 | 9,539 | 47,695 | 66,773 | 104,929 | 333,865 | 467,411 | 524,645 | 734,503 | 2,337,055 | 3,672,515 | 5,141,521 | 25,707,605 |
| -1 | -5 | -7 | -11 | -35 | -49 | -55 | -77 | -245 | -385 | -539 | -2,695 | -9,539 | -47,695 | -66,773 | -104,929 | -333,865 | -467,411 | -524,645 | -734,503 | -2,337,055 | -3,672,515 | -5,141,521 | -25,707,605 |
Here are some more numbers to try:
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