21105504

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1$

素因数の和:90

約数の個数: 216

約数和(自身を含む): 74889360

約数和(自身を除く): 53783856

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 19, 21, 24, 28, 29, 32, 36, 38, 42, 48, 56, 57, 58, 63, 72, 76, 84, 87, 96, 112, 114, 116, 126, 133, 144, 152, 168, 171, 174, 203, 224, 228, 232, 252, 261, 266, 288, 304, 336, 342, 348, 361, 399, 406, 456, 464, 504, 522, 532, 551, 608, 609, 672, 684, 696, 722, 798, 812, 912, 928, 1008, 1044, 1064, 1083, 1102, 1197, 1218, 1368, 1392, 1444, 1596, 1624, 1653, 1824, 1827, 2016, 2088, 2128, 2166, 2204, 2394, 2436, 2527, 2736, 2784, 2888, 3192, 3248, 3249, 3306, 3654, 3857, 4176, 4256, 4332, 4408, 4788, 4872, 4959, 5054, 5472, 5776, 6384, 6496, 6498, 6612, 7308, 7581, 7714, 8352, 8664, 8816, 9576, 9744, 9918, 10108, 10469, 11552, 11571, 12768, 12996, 13224, 14616, 15162, 15428, 17328, 17632, 19152, 19488, 19836, 20216, 20938, 22743, 23142, 25992, 26448, 29232, 30324, 30856, 31407, 34656, 34713, 38304, 39672, 40432, 41876, 45486, 46284, 51984, 52896, 58464, 60648, 61712, 62814, 69426, 73283, 79344, 80864, 83752, 90972, 92568, 94221, 103968, 121296, 123424, 125628, 138852, 146566, 158688, 167504, 181944, 185136, 188442, 219849, 242592, 251256, 277704, 293132, 335008, 363888, 370272, 376884, 439698, 502512, 555408, 586264, 659547, 727776, 753768, 879396, 1005024, 1110816, 1172528, 1319094, 1507536, 1758792, 2345056, 2638188, 3015072, 3517584, 5276376, 7035168, 10552752, 21105504]

約数ペア:

[(1, 21105504), (2, 10552752), (3, 7035168), (4, 5276376), (6, 3517584), (7, 3015072), (8, 2638188), (9, 2345056), (12, 1758792), (14, 1507536), (16, 1319094), (18, 1172528), (19, 1110816), (21, 1005024), (24, 879396), (28, 753768), (29, 727776), (32, 659547), (36, 586264), (38, 555408), (42, 502512), (48, 439698), (56, 376884), (57, 370272), (58, 363888), (63, 335008), (72, 293132), (76, 277704), (84, 251256), (87, 242592), (96, 219849), (112, 188442), (114, 185136), (116, 181944), (126, 167504), (133, 158688), (144, 146566), (152, 138852), (168, 125628), (171, 123424), (174, 121296), (203, 103968), (224, 94221), (228, 92568), (232, 90972), (252, 83752), (261, 80864), (266, 79344), (288, 73283), (304, 69426), (336, 62814), (342, 61712), (348, 60648), (361, 58464), (399, 52896), (406, 51984), (456, 46284), (464, 45486), (504, 41876), (522, 40432), (532, 39672), (551, 38304), (608, 34713), (609, 34656), (672, 31407), (684, 30856), (696, 30324), (722, 29232), (798, 26448), (812, 25992), (912, 23142), (928, 22743), (1008, 20938), (1044, 20216), (1064, 19836), (1083, 19488), (1102, 19152), (1197, 17632), (1218, 17328), (1368, 15428), (1392, 15162), (1444, 14616), (1596, 13224), (1624, 12996), (1653, 12768), (1824, 11571), (1827, 11552), (2016, 10469), (2088, 10108), (2128, 9918), (2166, 9744), (2204, 9576), (2394, 8816), (2436, 8664), (2527, 8352), (2736, 7714), (2784, 7581), (2888, 7308), (3192, 6612), (3248, 6498), (3249, 6496), (3306, 6384), (3654, 5776), (3857, 5472), (4176, 5054), (4256, 4959), (4332, 4872), (4408, 4788)]