A:
Positive:
1 x 2878355697 x 4111936773 x 394295397 x 2967377511 x 563279679 x 4239115807 x 495677081 x 40649
Negative:
-1 x -287835569-7 x -41119367-73 x -3942953-97 x -2967377-511 x -563279-679 x -423911-5807 x -49567-7081 x -40649
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 287,835,569, 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 | 287,835,569 | |
| -1 | -287,835,569 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 287,835,569.
Example:
1 x 287,835,569 = 287,835,569
and
-1 x -287,835,569 = 287,835,569
Notice both answers equal 287,835,569
With that explanation out of the way, let's continue. Next, we take the number 287,835,569 and divide it by 2:
287,835,569 ÷ 2 = 143,917,784.5
If the quotient is a whole number, then 2 and 143,917,784.5 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 | 287,835,569 | |
| -1 | -287,835,569 |
Now, we try dividing 287,835,569 by 3:
287,835,569 ÷ 3 = 95,945,189.6667
If the quotient is a whole number, then 3 and 95,945,189.6667 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 | 287,835,569 | |
| -1 | -287,835,569 |
Let's try dividing by 4:
287,835,569 ÷ 4 = 71,958,892.25
If the quotient is a whole number, then 4 and 71,958,892.25 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 | 287,835,569 | |
| -1 | 287,835,569 |
If you did it right, you will end up with this table:
| 1 | 7 | 73 | 97 | 511 | 679 | 5,807 | 7,081 | 40,649 | 49,567 | 423,911 | 563,279 | 2,967,377 | 3,942,953 | 41,119,367 | 287,835,569 |
| -1 | -7 | -73 | -97 | -511 | -679 | -5,807 | -7,081 | -40,649 | -49,567 | -423,911 | -563,279 | -2,967,377 | -3,942,953 | -41,119,367 | -287,835,569 |
Here are some more numbers to try:
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