When looking for factors, try out some small numbers, such as 2, 3, 5, 7. In this case, it is quite obvious that 129 is not divisible by 2. But if you continue trying, you see that it IS divisible by 3. Of course, if you divide 129 by 3, you get the other factor.
129 * 106 = 13,674
7 multiplied by 2 multiplied by 6=84
28 multiplied by 30 equals 840.
23
24 multiplied by 90 equals 2,160.
129 * 106 = 13,674
146 multiplied by 129 = 18,834
129 multiplied by 122 is 15,738.
129
43 * 3 = 129
1 multiplied by 40 equals 40.
1 x 129, 3 x 43.
7 multiplied by 2 multiplied by 6=84
129 millimeters is 5.08 inches.
129 gallons equals 516 quarts.
102
28 multiplied by 30 equals 840.