A:
Positive:
1 x 1515013155 x 303002637 x 2164304535 x 4328609
Negative:
-1 x -151501315-5 x -30300263-7 x -21643045-35 x -4328609
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 151,501,315, 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 | 151,501,315 | |
| -1 | -151,501,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,501,315.
Example:
1 x 151,501,315 = 151,501,315
and
-1 x -151,501,315 = 151,501,315
Notice both answers equal 151,501,315
With that explanation out of the way, let's continue. Next, we take the number 151,501,315 and divide it by 2:
151,501,315 ÷ 2 = 75,750,657.5
If the quotient is a whole number, then 2 and 75,750,657.5 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 | 151,501,315 | |
| -1 | -151,501,315 |
Now, we try dividing 151,501,315 by 3:
151,501,315 ÷ 3 = 50,500,438.3333
If the quotient is a whole number, then 3 and 50,500,438.3333 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 | 151,501,315 | |
| -1 | -151,501,315 |
Let's try dividing by 4:
151,501,315 ÷ 4 = 37,875,328.75
If the quotient is a whole number, then 4 and 37,875,328.75 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 | 151,501,315 | |
| -1 | 151,501,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 4,328,609 | 21,643,045 | 30,300,263 | 151,501,315 |
| -1 | -5 | -7 | -35 | -4,328,609 | -21,643,045 | -30,300,263 | -151,501,315 |
Here are some more numbers to try:
Try the factor calculator