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Harshad n.  and  Zumkeller n.

First numbers that belong to both sets:

6, 12, 20, 24, 30, 40, 42, 48, 54, 60, 70, 80, 84, 90, 102, 108, 112, 114, 120, 126, 132, 140, 150, 156, 180, 192, 198, 204, 210, 216, 220, 222, 224, 228, 234, 240, 252, 264, 270, 280, 300, 306, 308, 312, 320, 330, 336, 342, 360, 364, 372, 378, 396, 402, 408, 414, 420, 432, 440, 444, 448, 460, 468, 476, 480, 486, 500, 504, 510, 516, 522, 540, 550, 552, 558, 588, 594, 600, 612, 624, 630, 640, 644, 660, 666, 684, 690, 700, 702, 704, 720, 732, 736, 756, 770, 780, 792, 804, 810, 820, 828, 832, 840, 864, 870, 880, 888, 910, 912, 918, 936, 960, 966, 972, 990, 1000, 1002, 1008, 1014, 1020, 1026, 1032, 1040, 1044, 1050, 1056, 1080, 1088, 1092, 1100, 1104, 1110, 1116, 1120, 1122, 1128, 1134, 1140, 1148, 1160, 1164, 1170, 1180, 1188, 1200, 1204, 1212, 1220, 1224, 1230, 1232, 1236, 1242, 1260, 1272, 1300, 1302, 1308, 1320, 1330, 1332, 1344, 1350, 1360, 1368, 1380, 1386, 1400, 1404, 1410, 1416, 1440, 1452, 1456, 1476, 1500, 1512, 1520, 1524, 1530, 1540, 1548, 1560, 1566, 1584, 1590, 1596, 1620, 1632, 1638, 1652, 1656, 1674, 1680, 1692, 1704, 1710, 1720, 1728, 1740, 1770, 1782, 1812, 1836, 1848, 1860, 1872, 1890, 1896, 1900, 1904, 1908, 1920, 1944, 1950, 1968, 1974, 1980, 1998, 2000, 2004, 2010, 2016, 2020, 2022, 2024, 2028, 2030, 2040, 2052, 2064, 2070, 2080, 2088, 2090, 2100, 2106, 2112, 2120, 2124, 2130, 2136, 2142, 2156, 2160, 2170, 2172, 2176, 2196, 2200, 2202, 2205, 2208, 2210, 2212, 2214, 2220, 2232, 2240, 2244, 2250, 2260, 2268, 2280, 2300, 2310, 2316, 2322, 2340, 2352, 2376, 2394, 2400, 2408, 2412, 2424, 2430, 2440, 2448, 2460.

Some larger examples :