A:
Positive:
1 x 2015521555 x 403104317 x 2879316535 x 5758633107 x 1883665535 x 376733749 x 2690953745 x 53819
Negative:
-1 x -201552155-5 x -40310431-7 x -28793165-35 x -5758633-107 x -1883665-535 x -376733-749 x -269095-3745 x -53819
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 201,552,155, 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 | 201,552,155 | |
| -1 | -201,552,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 201,552,155.
Example:
1 x 201,552,155 = 201,552,155
and
-1 x -201,552,155 = 201,552,155
Notice both answers equal 201,552,155
With that explanation out of the way, let's continue. Next, we take the number 201,552,155 and divide it by 2:
201,552,155 ÷ 2 = 100,776,077.5
If the quotient is a whole number, then 2 and 100,776,077.5 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 | 201,552,155 | |
| -1 | -201,552,155 |
Now, we try dividing 201,552,155 by 3:
201,552,155 ÷ 3 = 67,184,051.6667
If the quotient is a whole number, then 3 and 67,184,051.6667 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 | 201,552,155 | |
| -1 | -201,552,155 |
Let's try dividing by 4:
201,552,155 ÷ 4 = 50,388,038.75
If the quotient is a whole number, then 4 and 50,388,038.75 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 | 201,552,155 | |
| -1 | 201,552,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 107 | 535 | 749 | 3,745 | 53,819 | 269,095 | 376,733 | 1,883,665 | 5,758,633 | 28,793,165 | 40,310,431 | 201,552,155 |
| -1 | -5 | -7 | -35 | -107 | -535 | -749 | -3,745 | -53,819 | -269,095 | -376,733 | -1,883,665 | -5,758,633 | -28,793,165 | -40,310,431 | -201,552,155 |
Here are some more numbers to try:
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