A:
Positive:
1 x 155346177 x 221923117 x 91380149 x 317033119 x 130543289 x 53753833 x 186491097 x 141612023 x 7679
Negative:
-1 x -15534617-7 x -2219231-17 x -913801-49 x -317033-119 x -130543-289 x -53753-833 x -18649-1097 x -14161-2023 x -7679
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 15,534,617, 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 | 15,534,617 | |
| -1 | -15,534,617 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,534,617.
Example:
1 x 15,534,617 = 15,534,617
and
-1 x -15,534,617 = 15,534,617
Notice both answers equal 15,534,617
With that explanation out of the way, let's continue. Next, we take the number 15,534,617 and divide it by 2:
15,534,617 ÷ 2 = 7,767,308.5
If the quotient is a whole number, then 2 and 7,767,308.5 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 | 15,534,617 | |
| -1 | -15,534,617 |
Now, we try dividing 15,534,617 by 3:
15,534,617 ÷ 3 = 5,178,205.6667
If the quotient is a whole number, then 3 and 5,178,205.6667 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 | 15,534,617 | |
| -1 | -15,534,617 |
Let's try dividing by 4:
15,534,617 ÷ 4 = 3,883,654.25
If the quotient is a whole number, then 4 and 3,883,654.25 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 | 15,534,617 | |
| -1 | 15,534,617 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 49 | 119 | 289 | 833 | 1,097 | 2,023 | 7,679 | 14,161 | 18,649 | 53,753 | 130,543 | 317,033 | 913,801 | 2,219,231 | 15,534,617 |
| -1 | -7 | -17 | -49 | -119 | -289 | -833 | -1,097 | -2,023 | -7,679 | -14,161 | -18,649 | -53,753 | -130,543 | -317,033 | -913,801 | -2,219,231 | -15,534,617 |
Here are some more numbers to try:
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