Answer
Multiples of 1281 are:
1281, 2562, 3843, 5124, 6405, 7686, 8967, 10248, 11529, 12810, 14091, 15372, 16653, 17934, 19215, 20496, 21777, 23058, 24339, 25620, 26901, 28182, 29463, 30744, 32025, 33306, 34587, 35868, 37149, 38430, 39711, 40992, 42273, 43554, 44835, 46116, 47397, 48678, 49959, 51240, 52521, 53802, 55083, 56364, 57645, 58926, 60207, 61488, 62769
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