A:
Positive:
1 x 26346313919 x 13866481131 x 2011169151 x 1744789701 x 3758392489 x 1058512869 x 9183113319 x 19781
Negative:
-1 x -263463139-19 x -13866481-131 x -2011169-151 x -1744789-701 x -375839-2489 x -105851-2869 x -91831-13319 x -19781
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 263,463,139, 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 | 263,463,139 | |
| -1 | -263,463,139 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 263,463,139.
Example:
1 x 263,463,139 = 263,463,139
and
-1 x -263,463,139 = 263,463,139
Notice both answers equal 263,463,139
With that explanation out of the way, let's continue. Next, we take the number 263,463,139 and divide it by 2:
263,463,139 ÷ 2 = 131,731,569.5
If the quotient is a whole number, then 2 and 131,731,569.5 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 | 263,463,139 | |
| -1 | -263,463,139 |
Now, we try dividing 263,463,139 by 3:
263,463,139 ÷ 3 = 87,821,046.3333
If the quotient is a whole number, then 3 and 87,821,046.3333 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 | 263,463,139 | |
| -1 | -263,463,139 |
Let's try dividing by 4:
263,463,139 ÷ 4 = 65,865,784.75
If the quotient is a whole number, then 4 and 65,865,784.75 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 | 263,463,139 | |
| -1 | 263,463,139 |
If you did it right, you will end up with this table:
| 1 | 19 | 131 | 151 | 701 | 2,489 | 2,869 | 13,319 | 19,781 | 91,831 | 105,851 | 375,839 | 1,744,789 | 2,011,169 | 13,866,481 | 263,463,139 |
| -1 | -19 | -131 | -151 | -701 | -2,489 | -2,869 | -13,319 | -19,781 | -91,831 | -105,851 | -375,839 | -1,744,789 | -2,011,169 | -13,866,481 | -263,463,139 |
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