A:
Positive:
1 x 252054555 x 504109111 x 229140555 x 458281107 x 235565535 x 471131177 x 214154283 x 5885
Negative:
-1 x -25205455-5 x -5041091-11 x -2291405-55 x -458281-107 x -235565-535 x -47113-1177 x -21415-4283 x -5885
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 25,205,455, 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 | 25,205,455 | |
| -1 | -25,205,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,205,455.
Example:
1 x 25,205,455 = 25,205,455
and
-1 x -25,205,455 = 25,205,455
Notice both answers equal 25,205,455
With that explanation out of the way, let's continue. Next, we take the number 25,205,455 and divide it by 2:
25,205,455 ÷ 2 = 12,602,727.5
If the quotient is a whole number, then 2 and 12,602,727.5 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 | 25,205,455 | |
| -1 | -25,205,455 |
Now, we try dividing 25,205,455 by 3:
25,205,455 ÷ 3 = 8,401,818.3333
If the quotient is a whole number, then 3 and 8,401,818.3333 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 | 25,205,455 | |
| -1 | -25,205,455 |
Let's try dividing by 4:
25,205,455 ÷ 4 = 6,301,363.75
If the quotient is a whole number, then 4 and 6,301,363.75 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 | 25,205,455 | |
| -1 | 25,205,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 107 | 535 | 1,177 | 4,283 | 5,885 | 21,415 | 47,113 | 235,565 | 458,281 | 2,291,405 | 5,041,091 | 25,205,455 |
| -1 | -5 | -11 | -55 | -107 | -535 | -1,177 | -4,283 | -5,885 | -21,415 | -47,113 | -235,565 | -458,281 | -2,291,405 | -5,041,091 | -25,205,455 |
Here are some more numbers to try:
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