A:
Positive:
1 x 2103060655 x 4206121317 x 1237094573 x 288090585 x 2474189365 x 5761811241 x 1694656205 x 33893
Negative:
-1 x -210306065-5 x -42061213-17 x -12370945-73 x -2880905-85 x -2474189-365 x -576181-1241 x -169465-6205 x -33893
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 210,306,065, 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 | 210,306,065 | |
| -1 | -210,306,065 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 210,306,065.
Example:
1 x 210,306,065 = 210,306,065
and
-1 x -210,306,065 = 210,306,065
Notice both answers equal 210,306,065
With that explanation out of the way, let's continue. Next, we take the number 210,306,065 and divide it by 2:
210,306,065 ÷ 2 = 105,153,032.5
If the quotient is a whole number, then 2 and 105,153,032.5 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 | 210,306,065 | |
| -1 | -210,306,065 |
Now, we try dividing 210,306,065 by 3:
210,306,065 ÷ 3 = 70,102,021.6667
If the quotient is a whole number, then 3 and 70,102,021.6667 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 | 210,306,065 | |
| -1 | -210,306,065 |
Let's try dividing by 4:
210,306,065 ÷ 4 = 52,576,516.25
If the quotient is a whole number, then 4 and 52,576,516.25 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 | 210,306,065 | |
| -1 | 210,306,065 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 73 | 85 | 365 | 1,241 | 6,205 | 33,893 | 169,465 | 576,181 | 2,474,189 | 2,880,905 | 12,370,945 | 42,061,213 | 210,306,065 |
| -1 | -5 | -17 | -73 | -85 | -365 | -1,241 | -6,205 | -33,893 | -169,465 | -576,181 | -2,474,189 | -2,880,905 | -12,370,945 | -42,061,213 | -210,306,065 |
Here are some more numbers to try:
Try the factor calculator