A:
Positive:
1 x 1034320217 x 1477600311 x 940291173 x 141687777 x 1343273511 x 202411803 x 1288075621 x 18401
Negative:
-1 x -103432021-7 x -14776003-11 x -9402911-73 x -1416877-77 x -1343273-511 x -202411-803 x -128807-5621 x -18401
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 103,432,021, 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 | 103,432,021 | |
| -1 | -103,432,021 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 103,432,021.
Example:
1 x 103,432,021 = 103,432,021
and
-1 x -103,432,021 = 103,432,021
Notice both answers equal 103,432,021
With that explanation out of the way, let's continue. Next, we take the number 103,432,021 and divide it by 2:
103,432,021 ÷ 2 = 51,716,010.5
If the quotient is a whole number, then 2 and 51,716,010.5 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 | 103,432,021 | |
| -1 | -103,432,021 |
Now, we try dividing 103,432,021 by 3:
103,432,021 ÷ 3 = 34,477,340.3333
If the quotient is a whole number, then 3 and 34,477,340.3333 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 | 103,432,021 | |
| -1 | -103,432,021 |
Let's try dividing by 4:
103,432,021 ÷ 4 = 25,858,005.25
If the quotient is a whole number, then 4 and 25,858,005.25 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 | 103,432,021 | |
| -1 | 103,432,021 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 73 | 77 | 511 | 803 | 5,621 | 18,401 | 128,807 | 202,411 | 1,343,273 | 1,416,877 | 9,402,911 | 14,776,003 | 103,432,021 |
| -1 | -7 | -11 | -73 | -77 | -511 | -803 | -5,621 | -18,401 | -128,807 | -202,411 | -1,343,273 | -1,416,877 | -9,402,911 | -14,776,003 | -103,432,021 |
Here are some more numbers to try:
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