A:
Positive:
1 x 1431452477 x 2044932129 x 4936043203 x 705149463 x 3091691523 x 939893241 x 4416710661 x 13427
Negative:
-1 x -143145247-7 x -20449321-29 x -4936043-203 x -705149-463 x -309169-1523 x -93989-3241 x -44167-10661 x -13427
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 143,145,247, 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 | 143,145,247 | |
| -1 | -143,145,247 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 143,145,247.
Example:
1 x 143,145,247 = 143,145,247
and
-1 x -143,145,247 = 143,145,247
Notice both answers equal 143,145,247
With that explanation out of the way, let's continue. Next, we take the number 143,145,247 and divide it by 2:
143,145,247 ÷ 2 = 71,572,623.5
If the quotient is a whole number, then 2 and 71,572,623.5 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 | 143,145,247 | |
| -1 | -143,145,247 |
Now, we try dividing 143,145,247 by 3:
143,145,247 ÷ 3 = 47,715,082.3333
If the quotient is a whole number, then 3 and 47,715,082.3333 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 | 143,145,247 | |
| -1 | -143,145,247 |
Let's try dividing by 4:
143,145,247 ÷ 4 = 35,786,311.75
If the quotient is a whole number, then 4 and 35,786,311.75 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 | 143,145,247 | |
| -1 | 143,145,247 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 203 | 463 | 1,523 | 3,241 | 10,661 | 13,427 | 44,167 | 93,989 | 309,169 | 705,149 | 4,936,043 | 20,449,321 | 143,145,247 |
| -1 | -7 | -29 | -203 | -463 | -1,523 | -3,241 | -10,661 | -13,427 | -44,167 | -93,989 | -309,169 | -705,149 | -4,936,043 | -20,449,321 | -143,145,247 |
Here are some more numbers to try:
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