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Harshad n.  and  pronic n.

First numbers that belong to both sets:

2, 6, 12, 20, 30, 42, 72, 90, 110, 132, 156, 210, 240, 306, 342, 420, 506, 552, 600, 702, 756, 870, 1056, 1122, 1260, 1332, 1560, 1980, 2070, 2352, 2862, 2970, 3080, 3540, 3660, 3906, 4032, 4290, 4830, 5112, 5256, 5550, 5700, 6480, 6642, 7140, 7656, 8010, 8190, 9120, 9702, 9900, 10100, 10302, 10920, 11130, 11556, 11772, 12210, 12432, 13110, 13572, 13806, 14280, 14520, 15750, 16002, 18090, 18360, 19460, 19740, 20022, 20306, 20592, 20880, 21756, 22650, 23256, 23562, 24180, 25440, 25760, 26082, 26406, 27060, 28056, 28392, 29070, 29412, 30102, 30800, 31152, 32220, 32580, 35532, 35910, 36672, 38220, 39006, 39402, 39800, 40200, 41412, 41820, 42642, 43056, 46440, 46872, 48620, 50400, 50850, 52212, 53592, 54522, 55460, 56406, 57840, 58806, 59292, 60270, 62250, 63252, 67340, 69432, 69960, 72630, 73170, 74256, 74802, 78120, 81510, 83232, 86142, 87320, 87912, 88506, 90300, 92720, 93330, 95790, 102080, 102720, 104652, 105300, 108570, 109230, 110556, 111222, 112560, 113232, 115260, 115940, 116622, 117306, 118680, 122850, 123552, 126380, 127092, 129240, 132132, 132860, 136530, 141000, 142506, 143262, 147840, 150156, 151710, 154056, 156420, 157212, 159600, 163620, 164430, 166056, 171810, 172640, 173472, 175980, 181050, 181902, 186192, 187056, 189660, 193160, 194040, 197580, 202050, 202950, 207480, 208392, 210222, 211140, 213906, 221370, 222312, 225150, 227052, 228006, 229920, 232806, 234740, 235710, 236682, 238632, 239610, 244530, 245520, 249500, 250500, 253512, 254520, 259590, 260610, 262656, 263682, 270920, 273006, 275100, 276150, 279312, 281430, 285690, 291060, 292140, 297570, 300852, 301950, 303050, 305256, 310806, 311922, 314160, 320922, 322056, 324330, 331200, 332352, 336980, 338142, 341640, 342810, 346332, 348690, 352242, 353430, 354620, 360600, 363006, 364212, 365420, 370272, 378840, 385020, 386262, 390000, 393756, 415380, 419256, 420552, 423150, 424452, 432306, 441560, 444222, 445556, 450912, 452256, 454950, 456300, 460362, 461720, 479556, 483720, 490700, 492102, 493506, 496320, 497730.

Some larger examples :