A:
Positive:
1 x 153141255 x 306282525 x 612565101 x 151625125 x 122513505 x 303251213 x 126252525 x 6065
Negative:
-1 x -15314125-5 x -3062825-25 x -612565-101 x -151625-125 x -122513-505 x -30325-1213 x -12625-2525 x -6065
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 15,314,125, 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 | 15,314,125 | |
| -1 | -15,314,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,314,125.
Example:
1 x 15,314,125 = 15,314,125
and
-1 x -15,314,125 = 15,314,125
Notice both answers equal 15,314,125
With that explanation out of the way, let's continue. Next, we take the number 15,314,125 and divide it by 2:
15,314,125 ÷ 2 = 7,657,062.5
If the quotient is a whole number, then 2 and 7,657,062.5 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 | 15,314,125 | |
| -1 | -15,314,125 |
Now, we try dividing 15,314,125 by 3:
15,314,125 ÷ 3 = 5,104,708.3333
If the quotient is a whole number, then 3 and 5,104,708.3333 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 | 15,314,125 | |
| -1 | -15,314,125 |
Let's try dividing by 4:
15,314,125 ÷ 4 = 3,828,531.25
If the quotient is a whole number, then 4 and 3,828,531.25 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 | 15,314,125 | |
| -1 | 15,314,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 101 | 125 | 505 | 1,213 | 2,525 | 6,065 | 12,625 | 30,325 | 122,513 | 151,625 | 612,565 | 3,062,825 | 15,314,125 |
| -1 | -5 | -25 | -101 | -125 | -505 | -1,213 | -2,525 | -6,065 | -12,625 | -30,325 | -122,513 | -151,625 | -612,565 | -3,062,825 | -15,314,125 |
Here are some more numbers to try:
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