A:
Positive:
1 x 151011255 x 302022513 x 116162525 x 60404565 x 232325125 x 120809325 x 464651625 x 9293
Negative:
-1 x -15101125-5 x -3020225-13 x -1161625-25 x -604045-65 x -232325-125 x -120809-325 x -46465-1625 x -9293
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 15,101,125, 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 | 15,101,125 | |
| -1 | -15,101,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,101,125.
Example:
1 x 15,101,125 = 15,101,125
and
-1 x -15,101,125 = 15,101,125
Notice both answers equal 15,101,125
With that explanation out of the way, let's continue. Next, we take the number 15,101,125 and divide it by 2:
15,101,125 ÷ 2 = 7,550,562.5
If the quotient is a whole number, then 2 and 7,550,562.5 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 | 15,101,125 | |
| -1 | -15,101,125 |
Now, we try dividing 15,101,125 by 3:
15,101,125 ÷ 3 = 5,033,708.3333
If the quotient is a whole number, then 3 and 5,033,708.3333 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 | 15,101,125 | |
| -1 | -15,101,125 |
Let's try dividing by 4:
15,101,125 ÷ 4 = 3,775,281.25
If the quotient is a whole number, then 4 and 3,775,281.25 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 | 15,101,125 | |
| -1 | 15,101,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 125 | 325 | 1,625 | 9,293 | 46,465 | 120,809 | 232,325 | 604,045 | 1,161,625 | 3,020,225 | 15,101,125 |
| -1 | -5 | -13 | -25 | -65 | -125 | -325 | -1,625 | -9,293 | -46,465 | -120,809 | -232,325 | -604,045 | -1,161,625 | -3,020,225 | -15,101,125 |
Here are some more numbers to try:
Try the factor calculator