A:
Positive:
1 x 207167355 x 414334713 x 159359565 x 31871967 x 30920571 x 291785335 x 61841355 x 58357871 x 23785923 x 224454355 x 47574489 x 4615
Negative:
-1 x -20716735-5 x -4143347-13 x -1593595-65 x -318719-67 x -309205-71 x -291785-335 x -61841-355 x -58357-871 x -23785-923 x -22445-4355 x -4757-4489 x -4615
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 20,716,735, 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 | 20,716,735 | |
| -1 | -20,716,735 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,716,735.
Example:
1 x 20,716,735 = 20,716,735
and
-1 x -20,716,735 = 20,716,735
Notice both answers equal 20,716,735
With that explanation out of the way, let's continue. Next, we take the number 20,716,735 and divide it by 2:
20,716,735 ÷ 2 = 10,358,367.5
If the quotient is a whole number, then 2 and 10,358,367.5 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 | 20,716,735 | |
| -1 | -20,716,735 |
Now, we try dividing 20,716,735 by 3:
20,716,735 ÷ 3 = 6,905,578.3333
If the quotient is a whole number, then 3 and 6,905,578.3333 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 | 20,716,735 | |
| -1 | -20,716,735 |
Let's try dividing by 4:
20,716,735 ÷ 4 = 5,179,183.75
If the quotient is a whole number, then 4 and 5,179,183.75 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 | 20,716,735 | |
| -1 | 20,716,735 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 67 | 71 | 335 | 355 | 871 | 923 | 4,355 | 4,489 | 4,615 | 4,757 | 22,445 | 23,785 | 58,357 | 61,841 | 291,785 | 309,205 | 318,719 | 1,593,595 | 4,143,347 | 20,716,735 |
| -1 | -5 | -13 | -65 | -67 | -71 | -335 | -355 | -871 | -923 | -4,355 | -4,489 | -4,615 | -4,757 | -22,445 | -23,785 | -58,357 | -61,841 | -291,785 | -309,205 | -318,719 | -1,593,595 | -4,143,347 | -20,716,735 |
Here are some more numbers to try:
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