A:
Positive:
1 x 1551222055 x 310244417 x 2216031535 x 4432063283 x 5481351415 x 1096271981 x 783059905 x 15661
Negative:
-1 x -155122205-5 x -31024441-7 x -22160315-35 x -4432063-283 x -548135-1415 x -109627-1981 x -78305-9905 x -15661
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 155,122,205, 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 | 155,122,205 | |
| -1 | -155,122,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,122,205.
Example:
1 x 155,122,205 = 155,122,205
and
-1 x -155,122,205 = 155,122,205
Notice both answers equal 155,122,205
With that explanation out of the way, let's continue. Next, we take the number 155,122,205 and divide it by 2:
155,122,205 ÷ 2 = 77,561,102.5
If the quotient is a whole number, then 2 and 77,561,102.5 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 | 155,122,205 | |
| -1 | -155,122,205 |
Now, we try dividing 155,122,205 by 3:
155,122,205 ÷ 3 = 51,707,401.6667
If the quotient is a whole number, then 3 and 51,707,401.6667 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 | 155,122,205 | |
| -1 | -155,122,205 |
Let's try dividing by 4:
155,122,205 ÷ 4 = 38,780,551.25
If the quotient is a whole number, then 4 and 38,780,551.25 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 | 155,122,205 | |
| -1 | 155,122,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 283 | 1,415 | 1,981 | 9,905 | 15,661 | 78,305 | 109,627 | 548,135 | 4,432,063 | 22,160,315 | 31,024,441 | 155,122,205 |
| -1 | -5 | -7 | -35 | -283 | -1,415 | -1,981 | -9,905 | -15,661 | -78,305 | -109,627 | -548,135 | -4,432,063 | -22,160,315 | -31,024,441 | -155,122,205 |
Here are some more numbers to try:
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