A:
Positive:
1 x 151364155 x 30272837 x 216234523 x 65810535 x 432469115 x 131621161 x 94015805 x 18803
Negative:
-1 x -15136415-5 x -3027283-7 x -2162345-23 x -658105-35 x -432469-115 x -131621-161 x -94015-805 x -18803
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 15,136,415, 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 | 15,136,415 | |
| -1 | -15,136,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,136,415.
Example:
1 x 15,136,415 = 15,136,415
and
-1 x -15,136,415 = 15,136,415
Notice both answers equal 15,136,415
With that explanation out of the way, let's continue. Next, we take the number 15,136,415 and divide it by 2:
15,136,415 ÷ 2 = 7,568,207.5
If the quotient is a whole number, then 2 and 7,568,207.5 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 | 15,136,415 | |
| -1 | -15,136,415 |
Now, we try dividing 15,136,415 by 3:
15,136,415 ÷ 3 = 5,045,471.6667
If the quotient is a whole number, then 3 and 5,045,471.6667 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 | 15,136,415 | |
| -1 | -15,136,415 |
Let's try dividing by 4:
15,136,415 ÷ 4 = 3,784,103.75
If the quotient is a whole number, then 4 and 3,784,103.75 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 | 15,136,415 | |
| -1 | 15,136,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 23 | 35 | 115 | 161 | 805 | 18,803 | 94,015 | 131,621 | 432,469 | 658,105 | 2,162,345 | 3,027,283 | 15,136,415 |
| -1 | -5 | -7 | -23 | -35 | -115 | -161 | -805 | -18,803 | -94,015 | -131,621 | -432,469 | -658,105 | -2,162,345 | -3,027,283 | -15,136,415 |
Here are some more numbers to try:
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