A:
Positive:
1 x 511289037 x 730412947 x 108784949 x 1043447149 x 343147329 x 1554071043 x 490212303 x 222017003 x 7301
Negative:
-1 x -51128903-7 x -7304129-47 x -1087849-49 x -1043447-149 x -343147-329 x -155407-1043 x -49021-2303 x -22201-7003 x -7301
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 51,128,903, 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 | 51,128,903 | |
| -1 | -51,128,903 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,128,903.
Example:
1 x 51,128,903 = 51,128,903
and
-1 x -51,128,903 = 51,128,903
Notice both answers equal 51,128,903
With that explanation out of the way, let's continue. Next, we take the number 51,128,903 and divide it by 2:
51,128,903 ÷ 2 = 25,564,451.5
If the quotient is a whole number, then 2 and 25,564,451.5 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 | 51,128,903 | |
| -1 | -51,128,903 |
Now, we try dividing 51,128,903 by 3:
51,128,903 ÷ 3 = 17,042,967.6667
If the quotient is a whole number, then 3 and 17,042,967.6667 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 | 51,128,903 | |
| -1 | -51,128,903 |
Let's try dividing by 4:
51,128,903 ÷ 4 = 12,782,225.75
If the quotient is a whole number, then 4 and 12,782,225.75 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 | 51,128,903 | |
| -1 | 51,128,903 |
If you did it right, you will end up with this table:
| 1 | 7 | 47 | 49 | 149 | 329 | 1,043 | 2,303 | 7,003 | 7,301 | 22,201 | 49,021 | 155,407 | 343,147 | 1,043,447 | 1,087,849 | 7,304,129 | 51,128,903 |
| -1 | -7 | -47 | -49 | -149 | -329 | -1,043 | -2,303 | -7,003 | -7,301 | -22,201 | -49,021 | -155,407 | -343,147 | -1,043,447 | -1,087,849 | -7,304,129 | -51,128,903 |
Here are some more numbers to try:
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