A:
Positive:
1 x 152512755 x 305025513 x 117317525 x 61005165 x 234635167 x 91325281 x 54275325 x 46927835 x 182651405 x 108552171 x 70253653 x 4175
Negative:
-1 x -15251275-5 x -3050255-13 x -1173175-25 x -610051-65 x -234635-167 x -91325-281 x -54275-325 x -46927-835 x -18265-1405 x -10855-2171 x -7025-3653 x -4175
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 15,251,275, 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 | 15,251,275 | |
| -1 | -15,251,275 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,251,275.
Example:
1 x 15,251,275 = 15,251,275
and
-1 x -15,251,275 = 15,251,275
Notice both answers equal 15,251,275
With that explanation out of the way, let's continue. Next, we take the number 15,251,275 and divide it by 2:
15,251,275 ÷ 2 = 7,625,637.5
If the quotient is a whole number, then 2 and 7,625,637.5 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 | 15,251,275 | |
| -1 | -15,251,275 |
Now, we try dividing 15,251,275 by 3:
15,251,275 ÷ 3 = 5,083,758.3333
If the quotient is a whole number, then 3 and 5,083,758.3333 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 | 15,251,275 | |
| -1 | -15,251,275 |
Let's try dividing by 4:
15,251,275 ÷ 4 = 3,812,818.75
If the quotient is a whole number, then 4 and 3,812,818.75 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 | 15,251,275 | |
| -1 | 15,251,275 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 167 | 281 | 325 | 835 | 1,405 | 2,171 | 3,653 | 4,175 | 7,025 | 10,855 | 18,265 | 46,927 | 54,275 | 91,325 | 234,635 | 610,051 | 1,173,175 | 3,050,255 | 15,251,275 |
| -1 | -5 | -13 | -25 | -65 | -167 | -281 | -325 | -835 | -1,405 | -2,171 | -3,653 | -4,175 | -7,025 | -10,855 | -18,265 | -46,927 | -54,275 | -91,325 | -234,635 | -610,051 | -1,173,175 | -3,050,255 | -15,251,275 |
Here are some more numbers to try:
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