Answer
Multiples of 431 are:
431, 862, 1293, 1724, 2155, 2586, 3017, 3448, 3879, 4310, 4741, 5172, 5603, 6034, 6465, 6896, 7327, 7758, 8189, 8620, 9051, 9482, 9913, 10344, 10775, 11206, 11637, 12068, 12499, 12930, 13361, 13792, 14223, 14654, 15085, 15516, 15947, 16378, 16809, 17240, 17671, 18102, 18533, 18964, 19395, 19826, 20257, 20688, 21119
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