A:
Positive:
1 x 21200445119 x 1115812947 x 4510733199 x 1065349893 x 2374071193 x 1777073781 x 560719353 x 22667
Negative:
-1 x -212004451-19 x -11158129-47 x -4510733-199 x -1065349-893 x -237407-1193 x -177707-3781 x -56071-9353 x -22667
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 212,004,451, 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 | 212,004,451 | |
| -1 | -212,004,451 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 212,004,451.
Example:
1 x 212,004,451 = 212,004,451
and
-1 x -212,004,451 = 212,004,451
Notice both answers equal 212,004,451
With that explanation out of the way, let's continue. Next, we take the number 212,004,451 and divide it by 2:
212,004,451 ÷ 2 = 106,002,225.5
If the quotient is a whole number, then 2 and 106,002,225.5 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 | 212,004,451 | |
| -1 | -212,004,451 |
Now, we try dividing 212,004,451 by 3:
212,004,451 ÷ 3 = 70,668,150.3333
If the quotient is a whole number, then 3 and 70,668,150.3333 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 | 212,004,451 | |
| -1 | -212,004,451 |
Let's try dividing by 4:
212,004,451 ÷ 4 = 53,001,112.75
If the quotient is a whole number, then 4 and 53,001,112.75 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 | 212,004,451 | |
| -1 | 212,004,451 |
If you did it right, you will end up with this table:
| 1 | 19 | 47 | 199 | 893 | 1,193 | 3,781 | 9,353 | 22,667 | 56,071 | 177,707 | 237,407 | 1,065,349 | 4,510,733 | 11,158,129 | 212,004,451 |
| -1 | -19 | -47 | -199 | -893 | -1,193 | -3,781 | -9,353 | -22,667 | -56,071 | -177,707 | -237,407 | -1,065,349 | -4,510,733 | -11,158,129 | -212,004,451 |
Here are some more numbers to try:
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