A:
Positive:
1 x 256053077 x 365790113 x 196963953 x 48311991 x 281377371 x 69017689 x 371634823 x 5309
Negative:
-1 x -25605307-7 x -3657901-13 x -1969639-53 x -483119-91 x -281377-371 x -69017-689 x -37163-4823 x -5309
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 25,605,307, 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 | 25,605,307 | |
| -1 | -25,605,307 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,605,307.
Example:
1 x 25,605,307 = 25,605,307
and
-1 x -25,605,307 = 25,605,307
Notice both answers equal 25,605,307
With that explanation out of the way, let's continue. Next, we take the number 25,605,307 and divide it by 2:
25,605,307 ÷ 2 = 12,802,653.5
If the quotient is a whole number, then 2 and 12,802,653.5 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 | 25,605,307 | |
| -1 | -25,605,307 |
Now, we try dividing 25,605,307 by 3:
25,605,307 ÷ 3 = 8,535,102.3333
If the quotient is a whole number, then 3 and 8,535,102.3333 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 | 25,605,307 | |
| -1 | -25,605,307 |
Let's try dividing by 4:
25,605,307 ÷ 4 = 6,401,326.75
If the quotient is a whole number, then 4 and 6,401,326.75 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 | 25,605,307 | |
| -1 | 25,605,307 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 53 | 91 | 371 | 689 | 4,823 | 5,309 | 37,163 | 69,017 | 281,377 | 483,119 | 1,969,639 | 3,657,901 | 25,605,307 |
| -1 | -7 | -13 | -53 | -91 | -371 | -689 | -4,823 | -5,309 | -37,163 | -69,017 | -281,377 | -483,119 | -1,969,639 | -3,657,901 | -25,605,307 |
Here are some more numbers to try:
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