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deficient n.  and  iban n.

First numbers that belong to both sets:

1, 2, 3, 4, 7, 10, 11, 14, 17, 21, 22, 23, 27, 41, 43, 44, 47, 71, 73, 74, 77, 101, 103, 107, 110, 111, 117, 121, 122, 123, 124, 127, 141, 142, 143, 147, 170, 171, 172, 173, 177, 201, 202, 203, 207, 211, 212, 214, 217, 221, 223, 227, 241, 242, 243, 244, 247, 271, 273, 274, 277, 301, 302, 303, 307, 310, 311, 314, 317, 321, 322, 323, 327, 341, 343, 344, 347, 370, 371, 373, 374, 377, 401, 403, 404, 407, 410, 411, 412, 417, 421, 422, 423, 424, 427, 441, 442, 443, 447, 470, 471, 472, 473, 477, 701, 703, 707, 710, 711, 712, 717, 721, 722, 723, 724, 727, 741, 742, 743, 747, 771, 772, 773, 777, 1001, 1003, 1004, 1007, 1010, 1011, 1012, 1017, 1021, 1022, 1023, 1024, 1027, 1041, 1042, 1043, 1047, 1070, 1071, 1072, 1073, 1077, 1101, 1102, 1103, 1107, 1111, 1112, 1114, 1117, 1121, 1123, 1124, 1127, 1141, 1142, 1143, 1147, 1171, 1172, 1173, 1174, 1177, 1201, 1202, 1203, 1207, 1210, 1211, 1214, 1217, 1221, 1222, 1223, 1227, 1241, 1243, 1244, 1247, 1270, 1271, 1273, 1274, 1277, 1301, 1303, 1304, 1307, 1310, 1311, 1317, 1321, 1322, 1323, 1324, 1327, 1341, 1342, 1343, 1347, 1370, 1371, 1373, 1377, 1401, 1402, 1403, 1407, 1411, 1412, 1414, 1417, 1421, 1423, 1424, 1427, 1441, 1442, 1443, 1444, 1447, 1471, 1473, 1474, 1477, 1701, 1702, 1703, 1707, 1711, 1712, 1714, 1717, 1721, 1723, 1724, 1727, 1741, 1742, 1743, 1744, 1747, 1771, 1772, 1773, 1774, 1777, 2001, 2003, 2007, 2011, 2012, 2014, 2017, 2021, 2023, 2027, 2041, 2042, 2043, 2047, 2071, 2073, 2074, 2077, 2101, 2102, 2103, 2104, 2107, 2110, 2111, 2114, 2117, 2121, 2122.

Some larger examples :