A:
Positive:
1 x 4254121311 x 386738313 x 3272401143 x 297491521 x 81653571 x 745035731 x 74236281 x 6773
Negative:
-1 x -42541213-11 x -3867383-13 x -3272401-143 x -297491-521 x -81653-571 x -74503-5731 x -7423-6281 x -6773
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 42,541,213, 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 | 42,541,213 | |
| -1 | -42,541,213 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,541,213.
Example:
1 x 42,541,213 = 42,541,213
and
-1 x -42,541,213 = 42,541,213
Notice both answers equal 42,541,213
With that explanation out of the way, let's continue. Next, we take the number 42,541,213 and divide it by 2:
42,541,213 ÷ 2 = 21,270,606.5
If the quotient is a whole number, then 2 and 21,270,606.5 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 | 42,541,213 | |
| -1 | -42,541,213 |
Now, we try dividing 42,541,213 by 3:
42,541,213 ÷ 3 = 14,180,404.3333
If the quotient is a whole number, then 3 and 14,180,404.3333 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 | 42,541,213 | |
| -1 | -42,541,213 |
Let's try dividing by 4:
42,541,213 ÷ 4 = 10,635,303.25
If the quotient is a whole number, then 4 and 10,635,303.25 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 | 42,541,213 | |
| -1 | 42,541,213 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 521 | 571 | 5,731 | 6,281 | 6,773 | 7,423 | 74,503 | 81,653 | 297,491 | 3,272,401 | 3,867,383 | 42,541,213 |
| -1 | -11 | -13 | -143 | -521 | -571 | -5,731 | -6,281 | -6,773 | -7,423 | -74,503 | -81,653 | -297,491 | -3,272,401 | -3,867,383 | -42,541,213 |
Here are some more numbers to try:
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