A:
Positive:
1 x 1517062197 x 2167231731 x 4893749163 x 930713217 x 6991071141 x 1329594289 x 353715053 x 30023
Negative:
-1 x -151706219-7 x -21672317-31 x -4893749-163 x -930713-217 x -699107-1141 x -132959-4289 x -35371-5053 x -30023
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 151,706,219, 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 | 151,706,219 | |
| -1 | -151,706,219 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,706,219.
Example:
1 x 151,706,219 = 151,706,219
and
-1 x -151,706,219 = 151,706,219
Notice both answers equal 151,706,219
With that explanation out of the way, let's continue. Next, we take the number 151,706,219 and divide it by 2:
151,706,219 ÷ 2 = 75,853,109.5
If the quotient is a whole number, then 2 and 75,853,109.5 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 | 151,706,219 | |
| -1 | -151,706,219 |
Now, we try dividing 151,706,219 by 3:
151,706,219 ÷ 3 = 50,568,739.6667
If the quotient is a whole number, then 3 and 50,568,739.6667 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 | 151,706,219 | |
| -1 | -151,706,219 |
Let's try dividing by 4:
151,706,219 ÷ 4 = 37,926,554.75
If the quotient is a whole number, then 4 and 37,926,554.75 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 | 151,706,219 | |
| -1 | 151,706,219 |
If you did it right, you will end up with this table:
| 1 | 7 | 31 | 163 | 217 | 1,141 | 4,289 | 5,053 | 30,023 | 35,371 | 132,959 | 699,107 | 930,713 | 4,893,749 | 21,672,317 | 151,706,219 |
| -1 | -7 | -31 | -163 | -217 | -1,141 | -4,289 | -5,053 | -30,023 | -35,371 | -132,959 | -699,107 | -930,713 | -4,893,749 | -21,672,317 | -151,706,219 |
Here are some more numbers to try:
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