A:
Positive:
1 x 253033137 x 361475953 x 477421241 x 104993283 x 89411371 x 682031687 x 149991981 x 12773
Negative:
-1 x -25303313-7 x -3614759-53 x -477421-241 x -104993-283 x -89411-371 x -68203-1687 x -14999-1981 x -12773
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 25,303,313, 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 | 25,303,313 | |
| -1 | -25,303,313 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,303,313.
Example:
1 x 25,303,313 = 25,303,313
and
-1 x -25,303,313 = 25,303,313
Notice both answers equal 25,303,313
With that explanation out of the way, let's continue. Next, we take the number 25,303,313 and divide it by 2:
25,303,313 ÷ 2 = 12,651,656.5
If the quotient is a whole number, then 2 and 12,651,656.5 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 | 25,303,313 | |
| -1 | -25,303,313 |
Now, we try dividing 25,303,313 by 3:
25,303,313 ÷ 3 = 8,434,437.6667
If the quotient is a whole number, then 3 and 8,434,437.6667 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 | 25,303,313 | |
| -1 | -25,303,313 |
Let's try dividing by 4:
25,303,313 ÷ 4 = 6,325,828.25
If the quotient is a whole number, then 4 and 6,325,828.25 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 | 25,303,313 | |
| -1 | 25,303,313 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 241 | 283 | 371 | 1,687 | 1,981 | 12,773 | 14,999 | 68,203 | 89,411 | 104,993 | 477,421 | 3,614,759 | 25,303,313 |
| -1 | -7 | -53 | -241 | -283 | -371 | -1,687 | -1,981 | -12,773 | -14,999 | -68,203 | -89,411 | -104,993 | -477,421 | -3,614,759 | -25,303,313 |
Here are some more numbers to try:
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