A:
Positive:
1 x 20415403953 x 385196371 x 2875409227 x 899357239 x 8542013763 x 5425312031 x 1696912667 x 16117
Negative:
-1 x -204154039-53 x -3851963-71 x -2875409-227 x -899357-239 x -854201-3763 x -54253-12031 x -16969-12667 x -16117
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 204,154,039, 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 | 204,154,039 | |
| -1 | -204,154,039 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 204,154,039.
Example:
1 x 204,154,039 = 204,154,039
and
-1 x -204,154,039 = 204,154,039
Notice both answers equal 204,154,039
With that explanation out of the way, let's continue. Next, we take the number 204,154,039 and divide it by 2:
204,154,039 ÷ 2 = 102,077,019.5
If the quotient is a whole number, then 2 and 102,077,019.5 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 | 204,154,039 | |
| -1 | -204,154,039 |
Now, we try dividing 204,154,039 by 3:
204,154,039 ÷ 3 = 68,051,346.3333
If the quotient is a whole number, then 3 and 68,051,346.3333 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 | 204,154,039 | |
| -1 | -204,154,039 |
Let's try dividing by 4:
204,154,039 ÷ 4 = 51,038,509.75
If the quotient is a whole number, then 4 and 51,038,509.75 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 | 204,154,039 | |
| -1 | 204,154,039 |
If you did it right, you will end up with this table:
| 1 | 53 | 71 | 227 | 239 | 3,763 | 12,031 | 12,667 | 16,117 | 16,969 | 54,253 | 854,201 | 899,357 | 2,875,409 | 3,851,963 | 204,154,039 |
| -1 | -53 | -71 | -227 | -239 | -3,763 | -12,031 | -12,667 | -16,117 | -16,969 | -54,253 | -854,201 | -899,357 | -2,875,409 | -3,851,963 | -204,154,039 |
Here are some more numbers to try:
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