A:
Positive:
1 x 2371571517 x 3387959311 x 2155974177 x 3079963277 x 8561631939 x 1223093047 x 7783311119 x 21329
Negative:
-1 x -237157151-7 x -33879593-11 x -21559741-77 x -3079963-277 x -856163-1939 x -122309-3047 x -77833-11119 x -21329
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 237,157,151, 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 | 237,157,151 | |
| -1 | -237,157,151 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 237,157,151.
Example:
1 x 237,157,151 = 237,157,151
and
-1 x -237,157,151 = 237,157,151
Notice both answers equal 237,157,151
With that explanation out of the way, let's continue. Next, we take the number 237,157,151 and divide it by 2:
237,157,151 ÷ 2 = 118,578,575.5
If the quotient is a whole number, then 2 and 118,578,575.5 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 | 237,157,151 | |
| -1 | -237,157,151 |
Now, we try dividing 237,157,151 by 3:
237,157,151 ÷ 3 = 79,052,383.6667
If the quotient is a whole number, then 3 and 79,052,383.6667 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 | 237,157,151 | |
| -1 | -237,157,151 |
Let's try dividing by 4:
237,157,151 ÷ 4 = 59,289,287.75
If the quotient is a whole number, then 4 and 59,289,287.75 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 | 237,157,151 | |
| -1 | 237,157,151 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 277 | 1,939 | 3,047 | 11,119 | 21,329 | 77,833 | 122,309 | 856,163 | 3,079,963 | 21,559,741 | 33,879,593 | 237,157,151 |
| -1 | -7 | -11 | -77 | -277 | -1,939 | -3,047 | -11,119 | -21,329 | -77,833 | -122,309 | -856,163 | -3,079,963 | -21,559,741 | -33,879,593 | -237,157,151 |
Here are some more numbers to try:
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