A:
Positive:
1 x 1201555255 x 240311057 x 1716507519 x 632397525 x 480622135 x 343301595 x 1264795133 x 903425175 x 686603475 x 252959665 x 1806853325 x 36137
Negative:
-1 x -120155525-5 x -24031105-7 x -17165075-19 x -6323975-25 x -4806221-35 x -3433015-95 x -1264795-133 x -903425-175 x -686603-475 x -252959-665 x -180685-3325 x -36137
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 120,155,525, 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 | 120,155,525 | |
| -1 | -120,155,525 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,155,525.
Example:
1 x 120,155,525 = 120,155,525
and
-1 x -120,155,525 = 120,155,525
Notice both answers equal 120,155,525
With that explanation out of the way, let's continue. Next, we take the number 120,155,525 and divide it by 2:
120,155,525 ÷ 2 = 60,077,762.5
If the quotient is a whole number, then 2 and 60,077,762.5 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 | 120,155,525 | |
| -1 | -120,155,525 |
Now, we try dividing 120,155,525 by 3:
120,155,525 ÷ 3 = 40,051,841.6667
If the quotient is a whole number, then 3 and 40,051,841.6667 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 | 120,155,525 | |
| -1 | -120,155,525 |
Let's try dividing by 4:
120,155,525 ÷ 4 = 30,038,881.25
If the quotient is a whole number, then 4 and 30,038,881.25 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 | 120,155,525 | |
| -1 | 120,155,525 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 25 | 35 | 95 | 133 | 175 | 475 | 665 | 3,325 | 36,137 | 180,685 | 252,959 | 686,603 | 903,425 | 1,264,795 | 3,433,015 | 4,806,221 | 6,323,975 | 17,165,075 | 24,031,105 | 120,155,525 |
| -1 | -5 | -7 | -19 | -25 | -35 | -95 | -133 | -175 | -475 | -665 | -3,325 | -36,137 | -180,685 | -252,959 | -686,603 | -903,425 | -1,264,795 | -3,433,015 | -4,806,221 | -6,323,975 | -17,165,075 | -24,031,105 | -120,155,525 |
Here are some more numbers to try:
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