A:
Positive:
1 x 2522029913 x 194002317 x 1483547139 x 181441221 x 114119821 x 307191807 x 139572363 x 10673
Negative:
-1 x -25220299-13 x -1940023-17 x -1483547-139 x -181441-221 x -114119-821 x -30719-1807 x -13957-2363 x -10673
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 25,220,299, 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 | 25,220,299 | |
| -1 | -25,220,299 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,220,299.
Example:
1 x 25,220,299 = 25,220,299
and
-1 x -25,220,299 = 25,220,299
Notice both answers equal 25,220,299
With that explanation out of the way, let's continue. Next, we take the number 25,220,299 and divide it by 2:
25,220,299 ÷ 2 = 12,610,149.5
If the quotient is a whole number, then 2 and 12,610,149.5 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 | 25,220,299 | |
| -1 | -25,220,299 |
Now, we try dividing 25,220,299 by 3:
25,220,299 ÷ 3 = 8,406,766.3333
If the quotient is a whole number, then 3 and 8,406,766.3333 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 | 25,220,299 | |
| -1 | -25,220,299 |
Let's try dividing by 4:
25,220,299 ÷ 4 = 6,305,074.75
If the quotient is a whole number, then 4 and 6,305,074.75 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 | 25,220,299 | |
| -1 | 25,220,299 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 139 | 221 | 821 | 1,807 | 2,363 | 10,673 | 13,957 | 30,719 | 114,119 | 181,441 | 1,483,547 | 1,940,023 | 25,220,299 |
| -1 | -13 | -17 | -139 | -221 | -821 | -1,807 | -2,363 | -10,673 | -13,957 | -30,719 | -114,119 | -181,441 | -1,483,547 | -1,940,023 | -25,220,299 |
Here are some more numbers to try:
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