Question

Write all factors of each of the following numbers:

(i) 60
(ii) 76
(iii) 125
(iv) 729

Answer 1

(i) 60 = 1 $\times$ 60
60 = 2 $\times$ 30
60 = 3 $\times$ 20
60 = 4 $\times$ 15
60 = 5 $\times$ 12
60 = 6 $\times$ 10
∴ The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60.

(ii) 76 = 1 $\times$ 76
76 = 2 $\times$ 38
76 = 4 $\times$ 19
∴ The factors of 76 are 1, 2, 4, 19, 38 and 76.

(iii) 125 = 1 $\times$ 125
125 = 5 $\times$ 25
∴ The factors of 125 are 1, 5, 25 and 125.

(iv) 729 = 1 $\times$ 729
729 = 3 $\times$ 243
729 = 9 $\times$ 81
729 = 27 $\times$ 27

∴ The factors of 729 are 1, 3, 9, 27, 81, 243 and 729.