A:
Positive:
1 x 200858637 x 286940967 x 299789113 x 177751379 x 52997469 x 42827791 x 253932653 x 7571
Negative:
-1 x -20085863-7 x -2869409-67 x -299789-113 x -177751-379 x -52997-469 x -42827-791 x -25393-2653 x -7571
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 20,085,863, 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 | 20,085,863 | |
| -1 | -20,085,863 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,085,863.
Example:
1 x 20,085,863 = 20,085,863
and
-1 x -20,085,863 = 20,085,863
Notice both answers equal 20,085,863
With that explanation out of the way, let's continue. Next, we take the number 20,085,863 and divide it by 2:
20,085,863 ÷ 2 = 10,042,931.5
If the quotient is a whole number, then 2 and 10,042,931.5 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 | 20,085,863 | |
| -1 | -20,085,863 |
Now, we try dividing 20,085,863 by 3:
20,085,863 ÷ 3 = 6,695,287.6667
If the quotient is a whole number, then 3 and 6,695,287.6667 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 | 20,085,863 | |
| -1 | -20,085,863 |
Let's try dividing by 4:
20,085,863 ÷ 4 = 5,021,465.75
If the quotient is a whole number, then 4 and 5,021,465.75 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 | 20,085,863 | |
| -1 | 20,085,863 |
If you did it right, you will end up with this table:
| 1 | 7 | 67 | 113 | 379 | 469 | 791 | 2,653 | 7,571 | 25,393 | 42,827 | 52,997 | 177,751 | 299,789 | 2,869,409 | 20,085,863 |
| -1 | -7 | -67 | -113 | -379 | -469 | -791 | -2,653 | -7,571 | -25,393 | -42,827 | -52,997 | -177,751 | -299,789 | -2,869,409 | -20,085,863 |
Here are some more numbers to try:
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