Answer
Multiples of 1621 are:
1621, 3242, 4863, 6484, 8105, 9726, 11347, 12968, 14589, 16210, 17831, 19452, 21073, 22694, 24315, 25936, 27557, 29178, 30799, 32420, 34041, 35662, 37283, 38904, 40525, 42146, 43767, 45388, 47009, 48630, 50251, 51872, 53493, 55114, 56735, 58356, 59977, 61598, 63219, 64840, 66461, 68082, 69703, 71324, 72945, 74566, 76187, 77808, 79429
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