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Harshad n.  and  pentagonal n.

First numbers that belong to both sets:

1, 5, 12, 70, 117, 210, 247, 330, 715, 782, 1080, 1520, 1926, 2625, 2752, 3015, 3290, 3432, 4510, 5370, 5922, 6902, 7740, 8400, 9560, 11310, 12105, 13776, 14652, 15862, 17442, 21182, 21540, 23002, 24130, 26070, 27270, 30602, 31032, 32340, 34580, 38320, 39285, 48510, 53487, 54055, 55200, 64170, 64792, 66045, 67947, 69876, 72490, 73151, 79926, 84847, 86280, 87725, 88452, 93625, 95130, 98945, 102051, 104412, 106800, 111657, 116622, 124272, 133057, 133952, 140301, 141220, 142142, 143995, 152482, 157302, 184626, 194220, 195301, 210750, 220992, 224460, 233840, 235026, 238602, 239800, 242205, 245835, 253176, 275847, 279720, 290180, 300832, 315792, 324105, 326900, 328302, 373252, 379262, 383801, 413175, 416330, 417912, 424270, 437130, 456780, 461760, 470120, 481950, 490490, 497376, 502572, 518322, 545112, 561510, 578151, 589380, 604520, 612162, 614080, 629532, 677040, 683100, 701442, 732552, 734650, 821030, 875162, 882050, 905205, 912210, 919242, 921592, 931022, 940500, 947640, 950026, 976470, 1005732, 1020525, 1023001, 1025480, 1035426, 1040417, 1057980, 1060501, 1065552, 1096110, 1119312, 1127100, 1148000, 1190376, 1214550, 1222662, 1233520, 1263627, 1269140, 1277432, 1322112, 1339065, 1358980, 1381920, 1416690, 1422527, 1460760, 1496502, 1535710, 1560090, 1569282, 1575425, 1578501, 1581580, 1606320, 1621880, 1628125, 1643790, 1684870, 1704001, 1720026, 1749060, 1765295, 1788150, 1827672, 1837620, 1897875, 1904630, 1972840, 2000460, 2017820, 2021301, 2042250, 2091551, 2112860, 2116422, 2130700, 2141440, 2202810, 2213730, 2217376, 2257680, 2276120, 2335632, 2346876, 2399705, 2414907, 2426340, 2437800, 2456960, 2460801, 2503250, 2518776, 2624832, 2672670, 2680685, 2733075, 2835250, 2843505, 2855910, 2901626, 2905800, 2939300, 2956122, 3011125, 3019632, 3070926, 3131315, 3157376, 3227400, 3240615, 3262700, 3307095, 3338350, 3405820, 3428460, 3455727, 3483102, 3515176, 3552012, 3561251, 3589040, 3649620, 3668362, 3691857, 3720150, 3762792, 3777060, 3800900, 3815240, 3820026, 3839200, 3853612, 3877692, 3892176, 3974762, 3994320, 4009020, 4068090, 4162501, 4202577, 4232760, 4242845, 4247892, 4268110, 4288376, 4308690, 4323957, 4339251, 4421275, 4436740, 4478112, 4619160, 4682550, 4826757, 4842915, 4902392, 5000501, 5055426, 5121732, 5166176, 5205222.

Some larger examples :