A:
Positive:
1 x 2063551113 x 158734771 x 29064179 x 261209283 x 72917923 x 223571027 x 200933679 x 5609
Negative:
-1 x -20635511-13 x -1587347-71 x -290641-79 x -261209-283 x -72917-923 x -22357-1027 x -20093-3679 x -5609
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 20,635,511, 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 | 20,635,511 | |
| -1 | -20,635,511 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,635,511.
Example:
1 x 20,635,511 = 20,635,511
and
-1 x -20,635,511 = 20,635,511
Notice both answers equal 20,635,511
With that explanation out of the way, let's continue. Next, we take the number 20,635,511 and divide it by 2:
20,635,511 ÷ 2 = 10,317,755.5
If the quotient is a whole number, then 2 and 10,317,755.5 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 | 20,635,511 | |
| -1 | -20,635,511 |
Now, we try dividing 20,635,511 by 3:
20,635,511 ÷ 3 = 6,878,503.6667
If the quotient is a whole number, then 3 and 6,878,503.6667 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 | 20,635,511 | |
| -1 | -20,635,511 |
Let's try dividing by 4:
20,635,511 ÷ 4 = 5,158,877.75
If the quotient is a whole number, then 4 and 5,158,877.75 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 | 20,635,511 | |
| -1 | 20,635,511 |
If you did it right, you will end up with this table:
| 1 | 13 | 71 | 79 | 283 | 923 | 1,027 | 3,679 | 5,609 | 20,093 | 22,357 | 72,917 | 261,209 | 290,641 | 1,587,347 | 20,635,511 |
| -1 | -13 | -71 | -79 | -283 | -923 | -1,027 | -3,679 | -5,609 | -20,093 | -22,357 | -72,917 | -261,209 | -290,641 | -1,587,347 | -20,635,511 |
Here are some more numbers to try:
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