The first seven of them are.
13, 26, 39, 52, 65
13, 26, 39, 52, 65
13, 26, 39, 52, 65
Factors: 1,3,13,39 Multiples: 39, 78, 117 and so on.
13 26 39 52 65
-13, -26, -39, -52, -65.
The multiples of 39 up to ten are: 1: 39 2: 78 3: 117 4: 156 5: 195 6: 234 7: 273 8: 312 9: 351 10: 390
The factors of 39 are 1,3,13,39.
All multiples of 39, which is an infinite number.
39, 78
3 x 13 = 39 1 x 39 = 39
Multiples of 195.