A:
Positive:
1 x 2100424137 x 30006059167 x 1257739353 x 595021509 x 4126571169 x 1796772471 x 850033563 x 58951
Negative:
-1 x -210042413-7 x -30006059-167 x -1257739-353 x -595021-509 x -412657-1169 x -179677-2471 x -85003-3563 x -58951
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 210,042,413, 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 | 210,042,413 | |
| -1 | -210,042,413 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 210,042,413.
Example:
1 x 210,042,413 = 210,042,413
and
-1 x -210,042,413 = 210,042,413
Notice both answers equal 210,042,413
With that explanation out of the way, let's continue. Next, we take the number 210,042,413 and divide it by 2:
210,042,413 ÷ 2 = 105,021,206.5
If the quotient is a whole number, then 2 and 105,021,206.5 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 | 210,042,413 | |
| -1 | -210,042,413 |
Now, we try dividing 210,042,413 by 3:
210,042,413 ÷ 3 = 70,014,137.6667
If the quotient is a whole number, then 3 and 70,014,137.6667 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 | 210,042,413 | |
| -1 | -210,042,413 |
Let's try dividing by 4:
210,042,413 ÷ 4 = 52,510,603.25
If the quotient is a whole number, then 4 and 52,510,603.25 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 | 210,042,413 | |
| -1 | 210,042,413 |
If you did it right, you will end up with this table:
| 1 | 7 | 167 | 353 | 509 | 1,169 | 2,471 | 3,563 | 58,951 | 85,003 | 179,677 | 412,657 | 595,021 | 1,257,739 | 30,006,059 | 210,042,413 |
| -1 | -7 | -167 | -353 | -509 | -1,169 | -2,471 | -3,563 | -58,951 | -85,003 | -179,677 | -412,657 | -595,021 | -1,257,739 | -30,006,059 | -210,042,413 |
Here are some more numbers to try:
Try the factor calculator