21780528

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:183

約数の個数: 160

約数和(自身を含む): 71995392

約数和(自身を除く): 50214864

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 24, 28, 33, 42, 44, 48, 56, 66, 71, 77, 83, 84, 88, 112, 132, 142, 154, 166, 168, 176, 213, 231, 249, 264, 284, 308, 332, 336, 426, 462, 497, 498, 528, 568, 581, 616, 664, 781, 852, 913, 924, 994, 996, 1136, 1162, 1232, 1328, 1491, 1562, 1704, 1743, 1826, 1848, 1988, 1992, 2324, 2343, 2739, 2982, 3124, 3408, 3486, 3652, 3696, 3976, 3984, 4648, 4686, 5467, 5478, 5893, 5964, 6248, 6391, 6972, 7304, 7952, 9296, 9372, 10934, 10956, 11786, 11928, 12496, 12782, 13944, 14608, 16401, 17679, 18744, 19173, 21868, 21912, 23572, 23856, 25564, 27888, 32802, 35358, 37488, 38346, 41251, 43736, 43824, 47144, 51128, 64823, 65604, 70716, 76692, 82502, 87472, 94288, 102256, 123753, 129646, 131208, 141432, 153384, 165004, 194469, 247506, 259292, 262416, 282864, 306768, 330008, 388938, 453761, 495012, 518584, 660016, 777876, 907522, 990024, 1037168, 1361283, 1555752, 1815044, 1980048, 2722566, 3111504, 3630088, 5445132, 7260176, 10890264, 21780528]

約数ペア:

[(1, 21780528), (2, 10890264), (3, 7260176), (4, 5445132), (6, 3630088), (7, 3111504), (8, 2722566), (11, 1980048), (12, 1815044), (14, 1555752), (16, 1361283), (21, 1037168), (22, 990024), (24, 907522), (28, 777876), (33, 660016), (42, 518584), (44, 495012), (48, 453761), (56, 388938), (66, 330008), (71, 306768), (77, 282864), (83, 262416), (84, 259292), (88, 247506), (112, 194469), (132, 165004), (142, 153384), (154, 141432), (166, 131208), (168, 129646), (176, 123753), (213, 102256), (231, 94288), (249, 87472), (264, 82502), (284, 76692), (308, 70716), (332, 65604), (336, 64823), (426, 51128), (462, 47144), (497, 43824), (498, 43736), (528, 41251), (568, 38346), (581, 37488), (616, 35358), (664, 32802), (781, 27888), (852, 25564), (913, 23856), (924, 23572), (994, 21912), (996, 21868), (1136, 19173), (1162, 18744), (1232, 17679), (1328, 16401), (1491, 14608), (1562, 13944), (1704, 12782), (1743, 12496), (1826, 11928), (1848, 11786), (1988, 10956), (1992, 10934), (2324, 9372), (2343, 9296), (2739, 7952), (2982, 7304), (3124, 6972), (3408, 6391), (3486, 6248), (3652, 5964), (3696, 5893), (3976, 5478), (3984, 5467), (4648, 4686)]