A:
Positive:
1 x 2536206555 x 5072413123 x 11026985109 x 2326795115 x 2205397545 x 4653592507 x 10116512535 x 20233
Negative:
-1 x -253620655-5 x -50724131-23 x -11026985-109 x -2326795-115 x -2205397-545 x -465359-2507 x -101165-12535 x -20233
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 253,620,655, 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 | 253,620,655 | |
| -1 | -253,620,655 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 253,620,655.
Example:
1 x 253,620,655 = 253,620,655
and
-1 x -253,620,655 = 253,620,655
Notice both answers equal 253,620,655
With that explanation out of the way, let's continue. Next, we take the number 253,620,655 and divide it by 2:
253,620,655 ÷ 2 = 126,810,327.5
If the quotient is a whole number, then 2 and 126,810,327.5 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 | 253,620,655 | |
| -1 | -253,620,655 |
Now, we try dividing 253,620,655 by 3:
253,620,655 ÷ 3 = 84,540,218.3333
If the quotient is a whole number, then 3 and 84,540,218.3333 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 | 253,620,655 | |
| -1 | -253,620,655 |
Let's try dividing by 4:
253,620,655 ÷ 4 = 63,405,163.75
If the quotient is a whole number, then 4 and 63,405,163.75 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 | 253,620,655 | |
| -1 | 253,620,655 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 109 | 115 | 545 | 2,507 | 12,535 | 20,233 | 101,165 | 465,359 | 2,205,397 | 2,326,795 | 11,026,985 | 50,724,131 | 253,620,655 |
| -1 | -5 | -23 | -109 | -115 | -545 | -2,507 | -12,535 | -20,233 | -101,165 | -465,359 | -2,205,397 | -2,326,795 | -11,026,985 | -50,724,131 | -253,620,655 |
Here are some more numbers to try:
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