A:
Positive:
1 x 153229455 x 306458911 x 139299523 x 66621555 x 278599115 x 133243253 x 605651265 x 12113
Negative:
-1 x -15322945-5 x -3064589-11 x -1392995-23 x -666215-55 x -278599-115 x -133243-253 x -60565-1265 x -12113
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 15,322,945, 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 | 15,322,945 | |
| -1 | -15,322,945 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,322,945.
Example:
1 x 15,322,945 = 15,322,945
and
-1 x -15,322,945 = 15,322,945
Notice both answers equal 15,322,945
With that explanation out of the way, let's continue. Next, we take the number 15,322,945 and divide it by 2:
15,322,945 ÷ 2 = 7,661,472.5
If the quotient is a whole number, then 2 and 7,661,472.5 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 | 15,322,945 | |
| -1 | -15,322,945 |
Now, we try dividing 15,322,945 by 3:
15,322,945 ÷ 3 = 5,107,648.3333
If the quotient is a whole number, then 3 and 5,107,648.3333 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 | 15,322,945 | |
| -1 | -15,322,945 |
Let's try dividing by 4:
15,322,945 ÷ 4 = 3,830,736.25
If the quotient is a whole number, then 4 and 3,830,736.25 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 | 15,322,945 | |
| -1 | 15,322,945 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 23 | 55 | 115 | 253 | 1,265 | 12,113 | 60,565 | 133,243 | 278,599 | 666,215 | 1,392,995 | 3,064,589 | 15,322,945 |
| -1 | -5 | -11 | -23 | -55 | -115 | -253 | -1,265 | -12,113 | -60,565 | -133,243 | -278,599 | -666,215 | -1,392,995 | -3,064,589 | -15,322,945 |
Here are some more numbers to try:
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