They are 10 and 15
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19 of them.
There are 19 integers between 1 and 100 containing a 5.
The first 3 digit number divisible by 19 is 114 (= 19 x 6) The last 3 digit number divisible by 19 is 988 (= 19 x 52) That means that there are 52 - 6 + 1 = 47 three digit numbers that are divisible by 19.
The sum is 3640.
17, 19, 21