A:
Positive:
1 x 1403081055 x 280616217 x 2004401535 x 4008803193 x 726985965 x 1453971351 x 1038556755 x 20771
Negative:
-1 x -140308105-5 x -28061621-7 x -20044015-35 x -4008803-193 x -726985-965 x -145397-1351 x -103855-6755 x -20771
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 140,308,105, 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 | 140,308,105 | |
| -1 | -140,308,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 140,308,105.
Example:
1 x 140,308,105 = 140,308,105
and
-1 x -140,308,105 = 140,308,105
Notice both answers equal 140,308,105
With that explanation out of the way, let's continue. Next, we take the number 140,308,105 and divide it by 2:
140,308,105 ÷ 2 = 70,154,052.5
If the quotient is a whole number, then 2 and 70,154,052.5 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 | 140,308,105 | |
| -1 | -140,308,105 |
Now, we try dividing 140,308,105 by 3:
140,308,105 ÷ 3 = 46,769,368.3333
If the quotient is a whole number, then 3 and 46,769,368.3333 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 | 140,308,105 | |
| -1 | -140,308,105 |
Let's try dividing by 4:
140,308,105 ÷ 4 = 35,077,026.25
If the quotient is a whole number, then 4 and 35,077,026.25 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 | 140,308,105 | |
| -1 | 140,308,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 193 | 965 | 1,351 | 6,755 | 20,771 | 103,855 | 145,397 | 726,985 | 4,008,803 | 20,044,015 | 28,061,621 | 140,308,105 |
| -1 | -5 | -7 | -35 | -193 | -965 | -1,351 | -6,755 | -20,771 | -103,855 | -145,397 | -726,985 | -4,008,803 | -20,044,015 | -28,061,621 | -140,308,105 |
Here are some more numbers to try:
Try the factor calculator