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deficient n.  and  Harshad n.

First numbers that belong to both sets:

1, 2, 3, 4, 5, 7, 8, 9, 10, 21, 27, 45, 50, 63, 81, 110, 111, 117, 133, 135, 152, 153, 171, 190, 195, 201, 207, 209, 225, 230, 243, 247, 261, 266, 285, 315, 322, 333, 351, 370, 375, 399, 405, 407, 410, 423, 441, 465, 481, 506, 511, 512, 513, 518, 531, 555, 592, 603, 605, 621, 629, 645, 711, 715, 730, 735, 777, 782, 801, 803, 825, 874, 902, 915, 935, 999, 1010, 1011, 1012, 1015, 1016, 1017, 1035, 1053, 1066, 1071, 1090, 1095, 1101, 1107, 1125, 1130, 1141, 1143, 1161, 1168, 1183, 1185, 1215, 1233, 1251, 1270, 1274, 1275, 1304, 1305, 1310, 1323, 1341, 1365, 1387, 1394, 1413, 1417, 1431, 1450, 1455, 1503, 1521, 1526, 1534, 1545, 1547, 1558, 1611, 1630, 1635, 1651, 1659, 1679, 1701, 1725, 1729, 1744, 1785, 1810, 1815, 1853, 1886, 1898, 1905, 2001, 2007, 2023, 2025, 2043, 2061, 2085, 2115, 2119, 2133, 2151, 2159, 2175, 2223, 2236, 2241, 2265, 2282, 2289, 2312, 2313, 2331, 2350, 2353, 2355, 2398, 2401, 2403, 2421, 2445, 2465, 2511, 2534, 2535, 2596, 2601, 2608, 2618, 2625, 2667, 2710, 2715, 2755, 2771, 2793, 2794, 2805, 2821, 2889, 2919, 2924, 2926, 2997, 3015, 3031, 3032, 3033, 3038, 3051, 3055, 3070, 3075, 3077, 3097, 3104, 3105, 3110, 3123, 3141, 3165, 3172, 3184, 3213, 3231, 3255, 3268, 3297, 3303, 3321, 3345, 3383, 3406, 3411, 3435, 3439, 3501, 3523, 3525, 3542, 3549, 3586, 3610, 3615, 3616, 3675, 3699, 3705, 3749, 3781, 3842, 3927, 3956, 3969, 3982, 4005, 4010, 4023, 4041, 4046, 4065, 4102, 4108, 4112, 4113, 4131, 4148, 4150, 4155, 4179, 4192, 4203, 4221, 4225, 4245, 4294, 4311, 4330, 4335, 4336, 4342, 4378, 4401, 4425, 4454, 4465, 4515, 4557, 4577, 4605.

Some larger examples :