A:
Positive:
1 x 2315743111 x 210522171 x 326161149 x 155419199 x 116369781 x 296511639 x 141292189 x 10579
Negative:
-1 x -23157431-11 x -2105221-71 x -326161-149 x -155419-199 x -116369-781 x -29651-1639 x -14129-2189 x -10579
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 23,157,431, 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 | 23,157,431 | |
| -1 | -23,157,431 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 23,157,431.
Example:
1 x 23,157,431 = 23,157,431
and
-1 x -23,157,431 = 23,157,431
Notice both answers equal 23,157,431
With that explanation out of the way, let's continue. Next, we take the number 23,157,431 and divide it by 2:
23,157,431 ÷ 2 = 11,578,715.5
If the quotient is a whole number, then 2 and 11,578,715.5 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 | 23,157,431 | |
| -1 | -23,157,431 |
Now, we try dividing 23,157,431 by 3:
23,157,431 ÷ 3 = 7,719,143.6667
If the quotient is a whole number, then 3 and 7,719,143.6667 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 | 23,157,431 | |
| -1 | -23,157,431 |
Let's try dividing by 4:
23,157,431 ÷ 4 = 5,789,357.75
If the quotient is a whole number, then 4 and 5,789,357.75 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 | 23,157,431 | |
| -1 | 23,157,431 |
If you did it right, you will end up with this table:
| 1 | 11 | 71 | 149 | 199 | 781 | 1,639 | 2,189 | 10,579 | 14,129 | 29,651 | 116,369 | 155,419 | 326,161 | 2,105,221 | 23,157,431 |
| -1 | -11 | -71 | -149 | -199 | -781 | -1,639 | -2,189 | -10,579 | -14,129 | -29,651 | -116,369 | -155,419 | -326,161 | -2,105,221 | -23,157,431 |
Here are some more numbers to try:
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