21330666

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:216

約数の個数: 96

約数和(自身を含む): 56229888

約数和(自身を除く): 34899222

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 31, 42, 43, 62, 63, 86, 93, 126, 127, 129, 186, 217, 254, 258, 279, 301, 381, 387, 434, 558, 602, 651, 762, 774, 889, 903, 1143, 1302, 1333, 1778, 1806, 1953, 2286, 2666, 2667, 2709, 3906, 3937, 3999, 5334, 5418, 5461, 7874, 7998, 8001, 9331, 10922, 11811, 11997, 16002, 16383, 18662, 23622, 23994, 27559, 27993, 32766, 35433, 38227, 49149, 55118, 55986, 70866, 76454, 82677, 83979, 98298, 114681, 165354, 167958, 169291, 229362, 248031, 338582, 344043, 496062, 507873, 688086, 1015746, 1185037, 1523619, 2370074, 3047238, 3555111, 7110222, 10665333, 21330666]

約数ペア:

[(1, 21330666), (2, 10665333), (3, 7110222), (6, 3555111), (7, 3047238), (9, 2370074), (14, 1523619), (18, 1185037), (21, 1015746), (31, 688086), (42, 507873), (43, 496062), (62, 344043), (63, 338582), (86, 248031), (93, 229362), (126, 169291), (127, 167958), (129, 165354), (186, 114681), (217, 98298), (254, 83979), (258, 82677), (279, 76454), (301, 70866), (381, 55986), (387, 55118), (434, 49149), (558, 38227), (602, 35433), (651, 32766), (762, 27993), (774, 27559), (889, 23994), (903, 23622), (1143, 18662), (1302, 16383), (1333, 16002), (1778, 11997), (1806, 11811), (1953, 10922), (2286, 9331), (2666, 8001), (2667, 7998), (2709, 7874), (3906, 5461), (3937, 5418), (3999, 5334)]