A:
Positive:
1 x 150388755 x 300777525 x 60155531 x 485125125 x 120311155 x 97025775 x 194053875 x 3881
Negative:
-1 x -15038875-5 x -3007775-25 x -601555-31 x -485125-125 x -120311-155 x -97025-775 x -19405-3875 x -3881
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 15,038,875, 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 | 15,038,875 | |
| -1 | -15,038,875 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,038,875.
Example:
1 x 15,038,875 = 15,038,875
and
-1 x -15,038,875 = 15,038,875
Notice both answers equal 15,038,875
With that explanation out of the way, let's continue. Next, we take the number 15,038,875 and divide it by 2:
15,038,875 ÷ 2 = 7,519,437.5
If the quotient is a whole number, then 2 and 7,519,437.5 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 | 15,038,875 | |
| -1 | -15,038,875 |
Now, we try dividing 15,038,875 by 3:
15,038,875 ÷ 3 = 5,012,958.3333
If the quotient is a whole number, then 3 and 5,012,958.3333 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 | 15,038,875 | |
| -1 | -15,038,875 |
Let's try dividing by 4:
15,038,875 ÷ 4 = 3,759,718.75
If the quotient is a whole number, then 4 and 3,759,718.75 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 | 15,038,875 | |
| -1 | 15,038,875 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 31 | 125 | 155 | 775 | 3,875 | 3,881 | 19,405 | 97,025 | 120,311 | 485,125 | 601,555 | 3,007,775 | 15,038,875 |
| -1 | -5 | -25 | -31 | -125 | -155 | -775 | -3,875 | -3,881 | -19,405 | -97,025 | -120,311 | -485,125 | -601,555 | -3,007,775 | -15,038,875 |
Here are some more numbers to try:
Try the factor calculator