Find all the factors of 38,39 and 40 do they have any factors in common explain how you can tell if some numbers have factors in commas without finding the factor

38 = 1, 2, 19 and 38

39 = 1,3, 13 and 39

40 = 1,2,4,5,8,10,20 and 40

common factors is 1

to know the factors in commas without finding the factor is to simply divide the number by each factor gotten, take for example i have 38 as the number and i have gotten 1, 2.

38 divided by 1 equals 38

38 divided by 2 equals 19

so they are the factors