A:
Positive:
1 x 1515006855 x 303001377 x 2164295517 x 891180535 x 432859185 x 1782361119 x 1273115595 x 254623
Negative:
-1 x -151500685-5 x -30300137-7 x -21642955-17 x -8911805-35 x -4328591-85 x -1782361-119 x -1273115-595 x -254623
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 151,500,685, 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 | 151,500,685 | |
| -1 | -151,500,685 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,500,685.
Example:
1 x 151,500,685 = 151,500,685
and
-1 x -151,500,685 = 151,500,685
Notice both answers equal 151,500,685
With that explanation out of the way, let's continue. Next, we take the number 151,500,685 and divide it by 2:
151,500,685 ÷ 2 = 75,750,342.5
If the quotient is a whole number, then 2 and 75,750,342.5 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 | 151,500,685 | |
| -1 | -151,500,685 |
Now, we try dividing 151,500,685 by 3:
151,500,685 ÷ 3 = 50,500,228.3333
If the quotient is a whole number, then 3 and 50,500,228.3333 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 | 151,500,685 | |
| -1 | -151,500,685 |
Let's try dividing by 4:
151,500,685 ÷ 4 = 37,875,171.25
If the quotient is a whole number, then 4 and 37,875,171.25 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 | 151,500,685 | |
| -1 | 151,500,685 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 17 | 35 | 85 | 119 | 595 | 254,623 | 1,273,115 | 1,782,361 | 4,328,591 | 8,911,805 | 21,642,955 | 30,300,137 | 151,500,685 |
| -1 | -5 | -7 | -17 | -35 | -85 | -119 | -595 | -254,623 | -1,273,115 | -1,782,361 | -4,328,591 | -8,911,805 | -21,642,955 | -30,300,137 | -151,500,685 |
Here are some more numbers to try:
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