A:
Positive:
1 x 2813600655 x 562720137 x 4019429535 x 8038859109 x 2581285545 x 516257763 x 3687553815 x 73751
Negative:
-1 x -281360065-5 x -56272013-7 x -40194295-35 x -8038859-109 x -2581285-545 x -516257-763 x -368755-3815 x -73751
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 281,360,065, 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 | 281,360,065 | |
| -1 | -281,360,065 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 281,360,065.
Example:
1 x 281,360,065 = 281,360,065
and
-1 x -281,360,065 = 281,360,065
Notice both answers equal 281,360,065
With that explanation out of the way, let's continue. Next, we take the number 281,360,065 and divide it by 2:
281,360,065 ÷ 2 = 140,680,032.5
If the quotient is a whole number, then 2 and 140,680,032.5 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 | 281,360,065 | |
| -1 | -281,360,065 |
Now, we try dividing 281,360,065 by 3:
281,360,065 ÷ 3 = 93,786,688.3333
If the quotient is a whole number, then 3 and 93,786,688.3333 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 | 281,360,065 | |
| -1 | -281,360,065 |
Let's try dividing by 4:
281,360,065 ÷ 4 = 70,340,016.25
If the quotient is a whole number, then 4 and 70,340,016.25 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 | 281,360,065 | |
| -1 | 281,360,065 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 109 | 545 | 763 | 3,815 | 73,751 | 368,755 | 516,257 | 2,581,285 | 8,038,859 | 40,194,295 | 56,272,013 | 281,360,065 |
| -1 | -5 | -7 | -35 | -109 | -545 | -763 | -3,815 | -73,751 | -368,755 | -516,257 | -2,581,285 | -8,038,859 | -40,194,295 | -56,272,013 | -281,360,065 |
Here are some more numbers to try:
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