A:
Positive:
1 x 21242419913 x 1634032319 x 11180221247 x 860017709 x 2996111213 x 1751239217 x 2304713471 x 15769
Negative:
-1 x -212424199-13 x -16340323-19 x -11180221-247 x -860017-709 x -299611-1213 x -175123-9217 x -23047-13471 x -15769
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 212,424,199, 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 | 212,424,199 | |
| -1 | -212,424,199 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 212,424,199.
Example:
1 x 212,424,199 = 212,424,199
and
-1 x -212,424,199 = 212,424,199
Notice both answers equal 212,424,199
With that explanation out of the way, let's continue. Next, we take the number 212,424,199 and divide it by 2:
212,424,199 ÷ 2 = 106,212,099.5
If the quotient is a whole number, then 2 and 106,212,099.5 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 | 212,424,199 | |
| -1 | -212,424,199 |
Now, we try dividing 212,424,199 by 3:
212,424,199 ÷ 3 = 70,808,066.3333
If the quotient is a whole number, then 3 and 70,808,066.3333 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 | 212,424,199 | |
| -1 | -212,424,199 |
Let's try dividing by 4:
212,424,199 ÷ 4 = 53,106,049.75
If the quotient is a whole number, then 4 and 53,106,049.75 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 | 212,424,199 | |
| -1 | 212,424,199 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 247 | 709 | 1,213 | 9,217 | 13,471 | 15,769 | 23,047 | 175,123 | 299,611 | 860,017 | 11,180,221 | 16,340,323 | 212,424,199 |
| -1 | -13 | -19 | -247 | -709 | -1,213 | -9,217 | -13,471 | -15,769 | -23,047 | -175,123 | -299,611 | -860,017 | -11,180,221 | -16,340,323 | -212,424,199 |
Here are some more numbers to try:
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