A:
Positive:
1 x 2532778855 x 506555777 x 3618255519 x 1333041535 x 723651195 x 2666083133 x 1904345665 x 380869
Negative:
-1 x -253277885-5 x -50655577-7 x -36182555-19 x -13330415-35 x -7236511-95 x -2666083-133 x -1904345-665 x -380869
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 253,277,885, 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 | 253,277,885 | |
| -1 | -253,277,885 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 253,277,885.
Example:
1 x 253,277,885 = 253,277,885
and
-1 x -253,277,885 = 253,277,885
Notice both answers equal 253,277,885
With that explanation out of the way, let's continue. Next, we take the number 253,277,885 and divide it by 2:
253,277,885 ÷ 2 = 126,638,942.5
If the quotient is a whole number, then 2 and 126,638,942.5 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 | 253,277,885 | |
| -1 | -253,277,885 |
Now, we try dividing 253,277,885 by 3:
253,277,885 ÷ 3 = 84,425,961.6667
If the quotient is a whole number, then 3 and 84,425,961.6667 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 | 253,277,885 | |
| -1 | -253,277,885 |
Let's try dividing by 4:
253,277,885 ÷ 4 = 63,319,471.25
If the quotient is a whole number, then 4 and 63,319,471.25 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 | 253,277,885 | |
| -1 | 253,277,885 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 35 | 95 | 133 | 665 | 380,869 | 1,904,345 | 2,666,083 | 7,236,511 | 13,330,415 | 36,182,555 | 50,655,577 | 253,277,885 |
| -1 | -5 | -7 | -19 | -35 | -95 | -133 | -665 | -380,869 | -1,904,345 | -2,666,083 | -7,236,511 | -13,330,415 | -36,182,555 | -50,655,577 | -253,277,885 |
Here are some more numbers to try:
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