Answer
Multiples of 1687 are:
1687, 3374, 5061, 6748, 8435, 10122, 11809, 13496, 15183, 16870, 18557, 20244, 21931, 23618, 25305, 26992, 28679, 30366, 32053, 33740, 35427, 37114, 38801, 40488, 42175, 43862, 45549, 47236, 48923, 50610, 52297, 53984, 55671, 57358, 59045, 60732, 62419, 64106, 65793, 67480, 69167, 70854, 72541, 74228, 75915, 77602, 79289, 80976, 82663
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