A:
Positive:
1 x 201564355 x 403128713 x 155049519 x 106086565 x 31009995 x 212173247 x 81605361 x 55835859 x 234651235 x 163211805 x 111674295 x 4693
Negative:
-1 x -20156435-5 x -4031287-13 x -1550495-19 x -1060865-65 x -310099-95 x -212173-247 x -81605-361 x -55835-859 x -23465-1235 x -16321-1805 x -11167-4295 x -4693
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 20,156,435, 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 | 20,156,435 | |
| -1 | -20,156,435 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,156,435.
Example:
1 x 20,156,435 = 20,156,435
and
-1 x -20,156,435 = 20,156,435
Notice both answers equal 20,156,435
With that explanation out of the way, let's continue. Next, we take the number 20,156,435 and divide it by 2:
20,156,435 ÷ 2 = 10,078,217.5
If the quotient is a whole number, then 2 and 10,078,217.5 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 | 20,156,435 | |
| -1 | -20,156,435 |
Now, we try dividing 20,156,435 by 3:
20,156,435 ÷ 3 = 6,718,811.6667
If the quotient is a whole number, then 3 and 6,718,811.6667 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 | 20,156,435 | |
| -1 | -20,156,435 |
Let's try dividing by 4:
20,156,435 ÷ 4 = 5,039,108.75
If the quotient is a whole number, then 4 and 5,039,108.75 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 | 20,156,435 | |
| -1 | 20,156,435 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 19 | 65 | 95 | 247 | 361 | 859 | 1,235 | 1,805 | 4,295 | 4,693 | 11,167 | 16,321 | 23,465 | 55,835 | 81,605 | 212,173 | 310,099 | 1,060,865 | 1,550,495 | 4,031,287 | 20,156,435 |
| -1 | -5 | -13 | -19 | -65 | -95 | -247 | -361 | -859 | -1,235 | -1,805 | -4,295 | -4,693 | -11,167 | -16,321 | -23,465 | -55,835 | -81,605 | -212,173 | -310,099 | -1,060,865 | -1,550,495 | -4,031,287 | -20,156,435 |
Here are some more numbers to try:
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