A:
Positive:
1 x 2303201455 x 4606402911 x 2093819555 x 4187639353 x 6524651765 x 1304933883 x 5931511863 x 19415
Negative:
-1 x -230320145-5 x -46064029-11 x -20938195-55 x -4187639-353 x -652465-1765 x -130493-3883 x -59315-11863 x -19415
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 230,320,145, 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 | 230,320,145 | |
| -1 | -230,320,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 230,320,145.
Example:
1 x 230,320,145 = 230,320,145
and
-1 x -230,320,145 = 230,320,145
Notice both answers equal 230,320,145
With that explanation out of the way, let's continue. Next, we take the number 230,320,145 and divide it by 2:
230,320,145 ÷ 2 = 115,160,072.5
If the quotient is a whole number, then 2 and 115,160,072.5 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 | 230,320,145 | |
| -1 | -230,320,145 |
Now, we try dividing 230,320,145 by 3:
230,320,145 ÷ 3 = 76,773,381.6667
If the quotient is a whole number, then 3 and 76,773,381.6667 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 | 230,320,145 | |
| -1 | -230,320,145 |
Let's try dividing by 4:
230,320,145 ÷ 4 = 57,580,036.25
If the quotient is a whole number, then 4 and 57,580,036.25 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 | 230,320,145 | |
| -1 | 230,320,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 353 | 1,765 | 3,883 | 11,863 | 19,415 | 59,315 | 130,493 | 652,465 | 4,187,639 | 20,938,195 | 46,064,029 | 230,320,145 |
| -1 | -5 | -11 | -55 | -353 | -1,765 | -3,883 | -11,863 | -19,415 | -59,315 | -130,493 | -652,465 | -4,187,639 | -20,938,195 | -46,064,029 | -230,320,145 |
Here are some more numbers to try:
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