A:
Positive:
1 x 2029201911 x 184472919 x 106800179 x 256861209 x 97091869 x 233511229 x 165111501 x 13519
Negative:
-1 x -20292019-11 x -1844729-19 x -1068001-79 x -256861-209 x -97091-869 x -23351-1229 x -16511-1501 x -13519
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 20,292,019, 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 | 20,292,019 | |
| -1 | -20,292,019 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,292,019.
Example:
1 x 20,292,019 = 20,292,019
and
-1 x -20,292,019 = 20,292,019
Notice both answers equal 20,292,019
With that explanation out of the way, let's continue. Next, we take the number 20,292,019 and divide it by 2:
20,292,019 ÷ 2 = 10,146,009.5
If the quotient is a whole number, then 2 and 10,146,009.5 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 | 20,292,019 | |
| -1 | -20,292,019 |
Now, we try dividing 20,292,019 by 3:
20,292,019 ÷ 3 = 6,764,006.3333
If the quotient is a whole number, then 3 and 6,764,006.3333 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 | 20,292,019 | |
| -1 | -20,292,019 |
Let's try dividing by 4:
20,292,019 ÷ 4 = 5,073,004.75
If the quotient is a whole number, then 4 and 5,073,004.75 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 | 20,292,019 | |
| -1 | 20,292,019 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 79 | 209 | 869 | 1,229 | 1,501 | 13,519 | 16,511 | 23,351 | 97,091 | 256,861 | 1,068,001 | 1,844,729 | 20,292,019 |
| -1 | -11 | -19 | -79 | -209 | -869 | -1,229 | -1,501 | -13,519 | -16,511 | -23,351 | -97,091 | -256,861 | -1,068,001 | -1,844,729 | -20,292,019 |
Here are some more numbers to try:
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