A:
Positive:
1 x 151661155 x 303322337 x 40989573 x 207755185 x 81979365 x 415511123 x 135052701 x 5615
Negative:
-1 x -15166115-5 x -3033223-37 x -409895-73 x -207755-185 x -81979-365 x -41551-1123 x -13505-2701 x -5615
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 15,166,115, 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 | 15,166,115 | |
| -1 | -15,166,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,166,115.
Example:
1 x 15,166,115 = 15,166,115
and
-1 x -15,166,115 = 15,166,115
Notice both answers equal 15,166,115
With that explanation out of the way, let's continue. Next, we take the number 15,166,115 and divide it by 2:
15,166,115 ÷ 2 = 7,583,057.5
If the quotient is a whole number, then 2 and 7,583,057.5 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 | 15,166,115 | |
| -1 | -15,166,115 |
Now, we try dividing 15,166,115 by 3:
15,166,115 ÷ 3 = 5,055,371.6667
If the quotient is a whole number, then 3 and 5,055,371.6667 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 | 15,166,115 | |
| -1 | -15,166,115 |
Let's try dividing by 4:
15,166,115 ÷ 4 = 3,791,528.75
If the quotient is a whole number, then 4 and 3,791,528.75 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 | 15,166,115 | |
| -1 | 15,166,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 73 | 185 | 365 | 1,123 | 2,701 | 5,615 | 13,505 | 41,551 | 81,979 | 207,755 | 409,895 | 3,033,223 | 15,166,115 |
| -1 | -5 | -37 | -73 | -185 | -365 | -1,123 | -2,701 | -5,615 | -13,505 | -41,551 | -81,979 | -207,755 | -409,895 | -3,033,223 | -15,166,115 |
Here are some more numbers to try:
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