1, 5
1, 5, 25
The only prime factor of 25 is 5.
1, 2, 5, 10, 25, 50.
all you have to do is find 2 factors that equals 25 which is 5 and 5 and then your done basically because 5 are prime numbers, they have no fators. there are other numbers you can use to but 5 and 5 is one way.
2 and 5
2 and 5
2 and 5.
The factors of 350 are 1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, and 350.
1 5 29 145.
1, 5, 13, and 65
1 5 17 85.
1 2 5 10.
1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000.