A:
Positive:
1 x 2817727855 x 563545577 x 4025325535 x 805065149 x 5750465245 x 1150093343 x 8214951715 x 164299
Negative:
-1 x -281772785-5 x -56354557-7 x -40253255-35 x -8050651-49 x -5750465-245 x -1150093-343 x -821495-1715 x -164299
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 281,772,785, 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 | 281,772,785 | |
| -1 | -281,772,785 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 281,772,785.
Example:
1 x 281,772,785 = 281,772,785
and
-1 x -281,772,785 = 281,772,785
Notice both answers equal 281,772,785
With that explanation out of the way, let's continue. Next, we take the number 281,772,785 and divide it by 2:
281,772,785 ÷ 2 = 140,886,392.5
If the quotient is a whole number, then 2 and 140,886,392.5 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 | 281,772,785 | |
| -1 | -281,772,785 |
Now, we try dividing 281,772,785 by 3:
281,772,785 ÷ 3 = 93,924,261.6667
If the quotient is a whole number, then 3 and 93,924,261.6667 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 | 281,772,785 | |
| -1 | -281,772,785 |
Let's try dividing by 4:
281,772,785 ÷ 4 = 70,443,196.25
If the quotient is a whole number, then 4 and 70,443,196.25 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 | 281,772,785 | |
| -1 | 281,772,785 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 245 | 343 | 1,715 | 164,299 | 821,495 | 1,150,093 | 5,750,465 | 8,050,651 | 40,253,255 | 56,354,557 | 281,772,785 |
| -1 | -5 | -7 | -35 | -49 | -245 | -343 | -1,715 | -164,299 | -821,495 | -1,150,093 | -5,750,465 | -8,050,651 | -40,253,255 | -56,354,557 | -281,772,785 |
Here are some more numbers to try:
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