A:
Positive:
1 x 2512347555 x 5024695117 x 1477851585 x 2955703229 x 10970951145 x 2194193893 x 6453512907 x 19465
Negative:
-1 x -251234755-5 x -50246951-17 x -14778515-85 x -2955703-229 x -1097095-1145 x -219419-3893 x -64535-12907 x -19465
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 251,234,755, 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 | 251,234,755 | |
| -1 | -251,234,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 251,234,755.
Example:
1 x 251,234,755 = 251,234,755
and
-1 x -251,234,755 = 251,234,755
Notice both answers equal 251,234,755
With that explanation out of the way, let's continue. Next, we take the number 251,234,755 and divide it by 2:
251,234,755 ÷ 2 = 125,617,377.5
If the quotient is a whole number, then 2 and 125,617,377.5 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 | 251,234,755 | |
| -1 | -251,234,755 |
Now, we try dividing 251,234,755 by 3:
251,234,755 ÷ 3 = 83,744,918.3333
If the quotient is a whole number, then 3 and 83,744,918.3333 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 | 251,234,755 | |
| -1 | -251,234,755 |
Let's try dividing by 4:
251,234,755 ÷ 4 = 62,808,688.75
If the quotient is a whole number, then 4 and 62,808,688.75 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 | 251,234,755 | |
| -1 | 251,234,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 229 | 1,145 | 3,893 | 12,907 | 19,465 | 64,535 | 219,419 | 1,097,095 | 2,955,703 | 14,778,515 | 50,246,951 | 251,234,755 |
| -1 | -5 | -17 | -85 | -229 | -1,145 | -3,893 | -12,907 | -19,465 | -64,535 | -219,419 | -1,097,095 | -2,955,703 | -14,778,515 | -50,246,951 | -251,234,755 |
Here are some more numbers to try:
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