The prime factors of 39 are 3 and 13.
1, 3, 13, 39.
39*3=117 39*5=195
Oh, dude, that's an easy one. So, what can go into 21 and 39? Well, technically, the numbers that can go into both 21 and 39 are 1 and 3. Like, it's not rocket science, but hey, math can be a little sneaky sometimes.
Factors of 39 are 1, 3, 13, 39. Whereas the prime factors of 39 are 3, 13, 39.
3
39 ÷ 3 = 13
Thrice with a remainder of 3
3 times 3 x 13 = 39
39 ÷ 6 = 6 with remainder 3
3 with remainder 3.
4 with 3 remaining 39 - 3 = 36 = 9 x 4
39 times.
4 goes into 39, 11 times with a remainder of 3
3 times, with 3 left over.
3 with remainder 39.
Exactly 13 times