A:
Positive:
1 x 24539455 x 49078913 x 18876519 x 12915565 x 3775395 x 25831247 x 99351235 x 1987
Negative:
-1 x -2453945-5 x -490789-13 x -188765-19 x -129155-65 x -37753-95 x -25831-247 x -9935-1235 x -1987
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 2,453,945, 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 | 2,453,945 | |
| -1 | -2,453,945 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,453,945.
Example:
1 x 2,453,945 = 2,453,945
and
-1 x -2,453,945 = 2,453,945
Notice both answers equal 2,453,945
With that explanation out of the way, let's continue. Next, we take the number 2,453,945 and divide it by 2:
2,453,945 ÷ 2 = 1,226,972.5
If the quotient is a whole number, then 2 and 1,226,972.5 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 | 2,453,945 | |
| -1 | -2,453,945 |
Now, we try dividing 2,453,945 by 3:
2,453,945 ÷ 3 = 817,981.6667
If the quotient is a whole number, then 3 and 817,981.6667 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 | 2,453,945 | |
| -1 | -2,453,945 |
Let's try dividing by 4:
2,453,945 ÷ 4 = 613,486.25
If the quotient is a whole number, then 4 and 613,486.25 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 | 2,453,945 | |
| -1 | 2,453,945 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 19 | 65 | 95 | 247 | 1,235 | 1,987 | 9,935 | 25,831 | 37,753 | 129,155 | 188,765 | 490,789 | 2,453,945 |
| -1 | -5 | -13 | -19 | -65 | -95 | -247 | -1,235 | -1,987 | -9,935 | -25,831 | -37,753 | -129,155 | -188,765 | -490,789 | -2,453,945 |
Here are some more numbers to try:
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