A:
Positive:
1 x 2104021017 x 3005744313 x 1618477791 x 23121111019 x 2064792269 x 927297133 x 2949713247 x 15883
Negative:
-1 x -210402101-7 x -30057443-13 x -16184777-91 x -2312111-1019 x -206479-2269 x -92729-7133 x -29497-13247 x -15883
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 210,402,101, 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 | 210,402,101 | |
| -1 | -210,402,101 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 210,402,101.
Example:
1 x 210,402,101 = 210,402,101
and
-1 x -210,402,101 = 210,402,101
Notice both answers equal 210,402,101
With that explanation out of the way, let's continue. Next, we take the number 210,402,101 and divide it by 2:
210,402,101 ÷ 2 = 105,201,050.5
If the quotient is a whole number, then 2 and 105,201,050.5 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 | 210,402,101 | |
| -1 | -210,402,101 |
Now, we try dividing 210,402,101 by 3:
210,402,101 ÷ 3 = 70,134,033.6667
If the quotient is a whole number, then 3 and 70,134,033.6667 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 | 210,402,101 | |
| -1 | -210,402,101 |
Let's try dividing by 4:
210,402,101 ÷ 4 = 52,600,525.25
If the quotient is a whole number, then 4 and 52,600,525.25 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 | 210,402,101 | |
| -1 | 210,402,101 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 1,019 | 2,269 | 7,133 | 13,247 | 15,883 | 29,497 | 92,729 | 206,479 | 2,312,111 | 16,184,777 | 30,057,443 | 210,402,101 |
| -1 | -7 | -13 | -91 | -1,019 | -2,269 | -7,133 | -13,247 | -15,883 | -29,497 | -92,729 | -206,479 | -2,312,111 | -16,184,777 | -30,057,443 | -210,402,101 |
Here are some more numbers to try:
Try the factor calculator