A:
Positive:
1 x 1595590113 x 122737759 x 27043971 x 224731293 x 54457767 x 20803923 x 172873809 x 4189
Negative:
-1 x -15955901-13 x -1227377-59 x -270439-71 x -224731-293 x -54457-767 x -20803-923 x -17287-3809 x -4189
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 15,955,901, 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 | 15,955,901 | |
| -1 | -15,955,901 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,955,901.
Example:
1 x 15,955,901 = 15,955,901
and
-1 x -15,955,901 = 15,955,901
Notice both answers equal 15,955,901
With that explanation out of the way, let's continue. Next, we take the number 15,955,901 and divide it by 2:
15,955,901 ÷ 2 = 7,977,950.5
If the quotient is a whole number, then 2 and 7,977,950.5 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 | 15,955,901 | |
| -1 | -15,955,901 |
Now, we try dividing 15,955,901 by 3:
15,955,901 ÷ 3 = 5,318,633.6667
If the quotient is a whole number, then 3 and 5,318,633.6667 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 | 15,955,901 | |
| -1 | -15,955,901 |
Let's try dividing by 4:
15,955,901 ÷ 4 = 3,988,975.25
If the quotient is a whole number, then 4 and 3,988,975.25 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 | 15,955,901 | |
| -1 | 15,955,901 |
If you did it right, you will end up with this table:
| 1 | 13 | 59 | 71 | 293 | 767 | 923 | 3,809 | 4,189 | 17,287 | 20,803 | 54,457 | 224,731 | 270,439 | 1,227,377 | 15,955,901 |
| -1 | -13 | -59 | -71 | -293 | -767 | -923 | -3,809 | -4,189 | -17,287 | -20,803 | -54,457 | -224,731 | -270,439 | -1,227,377 | -15,955,901 |
Here are some more numbers to try:
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