A:
Positive:
1 x 2105315455 x 421063097 x 3007593535 x 6015187811 x 2595954055 x 519195677 x 370857417 x 28385
Negative:
-1 x -210531545-5 x -42106309-7 x -30075935-35 x -6015187-811 x -259595-4055 x -51919-5677 x -37085-7417 x -28385
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 210,531,545, 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 | 210,531,545 | |
| -1 | -210,531,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 210,531,545.
Example:
1 x 210,531,545 = 210,531,545
and
-1 x -210,531,545 = 210,531,545
Notice both answers equal 210,531,545
With that explanation out of the way, let's continue. Next, we take the number 210,531,545 and divide it by 2:
210,531,545 ÷ 2 = 105,265,772.5
If the quotient is a whole number, then 2 and 105,265,772.5 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 | 210,531,545 | |
| -1 | -210,531,545 |
Now, we try dividing 210,531,545 by 3:
210,531,545 ÷ 3 = 70,177,181.6667
If the quotient is a whole number, then 3 and 70,177,181.6667 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 | 210,531,545 | |
| -1 | -210,531,545 |
Let's try dividing by 4:
210,531,545 ÷ 4 = 52,632,886.25
If the quotient is a whole number, then 4 and 52,632,886.25 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 | 210,531,545 | |
| -1 | 210,531,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 811 | 4,055 | 5,677 | 7,417 | 28,385 | 37,085 | 51,919 | 259,595 | 6,015,187 | 30,075,935 | 42,106,309 | 210,531,545 |
| -1 | -5 | -7 | -35 | -811 | -4,055 | -5,677 | -7,417 | -28,385 | -37,085 | -51,919 | -259,595 | -6,015,187 | -30,075,935 | -42,106,309 | -210,531,545 |
Here are some more numbers to try:
Try the factor calculator