A:
Positive:
1 x 201560655 x 4031213101 x 199565167 x 120695239 x 84335505 x 39913835 x 241391195 x 16867
Negative:
-1 x -20156065-5 x -4031213-101 x -199565-167 x -120695-239 x -84335-505 x -39913-835 x -24139-1195 x -16867
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 20,156,065, 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 | 20,156,065 | |
| -1 | -20,156,065 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,156,065.
Example:
1 x 20,156,065 = 20,156,065
and
-1 x -20,156,065 = 20,156,065
Notice both answers equal 20,156,065
With that explanation out of the way, let's continue. Next, we take the number 20,156,065 and divide it by 2:
20,156,065 ÷ 2 = 10,078,032.5
If the quotient is a whole number, then 2 and 10,078,032.5 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 | 20,156,065 | |
| -1 | -20,156,065 |
Now, we try dividing 20,156,065 by 3:
20,156,065 ÷ 3 = 6,718,688.3333
If the quotient is a whole number, then 3 and 6,718,688.3333 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 | 20,156,065 | |
| -1 | -20,156,065 |
Let's try dividing by 4:
20,156,065 ÷ 4 = 5,039,016.25
If the quotient is a whole number, then 4 and 5,039,016.25 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 | 20,156,065 | |
| -1 | 20,156,065 |
If you did it right, you will end up with this table:
| 1 | 5 | 101 | 167 | 239 | 505 | 835 | 1,195 | 16,867 | 24,139 | 39,913 | 84,335 | 120,695 | 199,565 | 4,031,213 | 20,156,065 |
| -1 | -5 | -101 | -167 | -239 | -505 | -835 | -1,195 | -16,867 | -24,139 | -39,913 | -84,335 | -120,695 | -199,565 | -4,031,213 | -20,156,065 |
Here are some more numbers to try:
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