A:
Positive:
1 x 2536061455 x 5072122913 x 1950816565 x 3901633569 x 4457052845 x 891416857 x 369857397 x 34285
Negative:
-1 x -253606145-5 x -50721229-13 x -19508165-65 x -3901633-569 x -445705-2845 x -89141-6857 x -36985-7397 x -34285
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 253,606,145, 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 | 253,606,145 | |
| -1 | -253,606,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 253,606,145.
Example:
1 x 253,606,145 = 253,606,145
and
-1 x -253,606,145 = 253,606,145
Notice both answers equal 253,606,145
With that explanation out of the way, let's continue. Next, we take the number 253,606,145 and divide it by 2:
253,606,145 ÷ 2 = 126,803,072.5
If the quotient is a whole number, then 2 and 126,803,072.5 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 | 253,606,145 | |
| -1 | -253,606,145 |
Now, we try dividing 253,606,145 by 3:
253,606,145 ÷ 3 = 84,535,381.6667
If the quotient is a whole number, then 3 and 84,535,381.6667 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 | 253,606,145 | |
| -1 | -253,606,145 |
Let's try dividing by 4:
253,606,145 ÷ 4 = 63,401,536.25
If the quotient is a whole number, then 4 and 63,401,536.25 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 | 253,606,145 | |
| -1 | 253,606,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 569 | 2,845 | 6,857 | 7,397 | 34,285 | 36,985 | 89,141 | 445,705 | 3,901,633 | 19,508,165 | 50,721,229 | 253,606,145 |
| -1 | -5 | -13 | -65 | -569 | -2,845 | -6,857 | -7,397 | -34,285 | -36,985 | -89,141 | -445,705 | -3,901,633 | -19,508,165 | -50,721,229 | -253,606,145 |
Here are some more numbers to try:
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