A:
Positive:
1 x 2536651155 x 5073302311 x 2306046555 x 46120931117 x 2270954129 x 614355585 x 4541912287 x 20645
Negative:
-1 x -253665115-5 x -50733023-11 x -23060465-55 x -4612093-1117 x -227095-4129 x -61435-5585 x -45419-12287 x -20645
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 253,665,115, 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 | 253,665,115 | |
| -1 | -253,665,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 253,665,115.
Example:
1 x 253,665,115 = 253,665,115
and
-1 x -253,665,115 = 253,665,115
Notice both answers equal 253,665,115
With that explanation out of the way, let's continue. Next, we take the number 253,665,115 and divide it by 2:
253,665,115 ÷ 2 = 126,832,557.5
If the quotient is a whole number, then 2 and 126,832,557.5 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 | 253,665,115 | |
| -1 | -253,665,115 |
Now, we try dividing 253,665,115 by 3:
253,665,115 ÷ 3 = 84,555,038.3333
If the quotient is a whole number, then 3 and 84,555,038.3333 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 | 253,665,115 | |
| -1 | -253,665,115 |
Let's try dividing by 4:
253,665,115 ÷ 4 = 63,416,278.75
If the quotient is a whole number, then 4 and 63,416,278.75 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 | 253,665,115 | |
| -1 | 253,665,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 1,117 | 4,129 | 5,585 | 12,287 | 20,645 | 45,419 | 61,435 | 227,095 | 4,612,093 | 23,060,465 | 50,733,023 | 253,665,115 |
| -1 | -5 | -11 | -55 | -1,117 | -4,129 | -5,585 | -12,287 | -20,645 | -45,419 | -61,435 | -227,095 | -4,612,093 | -23,060,465 | -50,733,023 | -253,665,115 |
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