A:
Positive:
1 x 202394355 x 404788717 x 119055531 x 65288585 x 238111155 x 130577527 x 384052635 x 7681
Negative:
-1 x -20239435-5 x -4047887-17 x -1190555-31 x -652885-85 x -238111-155 x -130577-527 x -38405-2635 x -7681
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 20,239,435, 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 | 20,239,435 | |
| -1 | -20,239,435 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,239,435.
Example:
1 x 20,239,435 = 20,239,435
and
-1 x -20,239,435 = 20,239,435
Notice both answers equal 20,239,435
With that explanation out of the way, let's continue. Next, we take the number 20,239,435 and divide it by 2:
20,239,435 ÷ 2 = 10,119,717.5
If the quotient is a whole number, then 2 and 10,119,717.5 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 | 20,239,435 | |
| -1 | -20,239,435 |
Now, we try dividing 20,239,435 by 3:
20,239,435 ÷ 3 = 6,746,478.3333
If the quotient is a whole number, then 3 and 6,746,478.3333 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 | 20,239,435 | |
| -1 | -20,239,435 |
Let's try dividing by 4:
20,239,435 ÷ 4 = 5,059,858.75
If the quotient is a whole number, then 4 and 5,059,858.75 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 | 20,239,435 | |
| -1 | 20,239,435 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 31 | 85 | 155 | 527 | 2,635 | 7,681 | 38,405 | 130,577 | 238,111 | 652,885 | 1,190,555 | 4,047,887 | 20,239,435 |
| -1 | -5 | -17 | -31 | -85 | -155 | -527 | -2,635 | -7,681 | -38,405 | -130,577 | -238,111 | -652,885 | -1,190,555 | -4,047,887 | -20,239,435 |
Here are some more numbers to try:
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