20712216

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:185

約数の個数: 128

約数和(自身を含む): 63221760

約数和(自身を除く): 42509544

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 31, 41, 42, 56, 62, 82, 84, 93, 97, 123, 124, 164, 168, 186, 194, 217, 246, 248, 287, 291, 328, 372, 388, 434, 492, 574, 582, 651, 679, 744, 776, 861, 868, 984, 1148, 1164, 1271, 1302, 1358, 1722, 1736, 2037, 2296, 2328, 2542, 2604, 2716, 3007, 3444, 3813, 3977, 4074, 5084, 5208, 5432, 6014, 6888, 7626, 7954, 8148, 8897, 9021, 10168, 11931, 12028, 15252, 15908, 16296, 17794, 18042, 21049, 23862, 24056, 26691, 27839, 30504, 31816, 35588, 36084, 42098, 47724, 53382, 55678, 63147, 71176, 72168, 83517, 84196, 95448, 106764, 111356, 123287, 126294, 167034, 168392, 213528, 222712, 246574, 252588, 334068, 369861, 493148, 505176, 668136, 739722, 863009, 986296, 1479444, 1726018, 2589027, 2958888, 3452036, 5178054, 6904072, 10356108, 20712216]

約数ペア:

[(1, 20712216), (2, 10356108), (3, 6904072), (4, 5178054), (6, 3452036), (7, 2958888), (8, 2589027), (12, 1726018), (14, 1479444), (21, 986296), (24, 863009), (28, 739722), (31, 668136), (41, 505176), (42, 493148), (56, 369861), (62, 334068), (82, 252588), (84, 246574), (93, 222712), (97, 213528), (123, 168392), (124, 167034), (164, 126294), (168, 123287), (186, 111356), (194, 106764), (217, 95448), (246, 84196), (248, 83517), (287, 72168), (291, 71176), (328, 63147), (372, 55678), (388, 53382), (434, 47724), (492, 42098), (574, 36084), (582, 35588), (651, 31816), (679, 30504), (744, 27839), (776, 26691), (861, 24056), (868, 23862), (984, 21049), (1148, 18042), (1164, 17794), (1271, 16296), (1302, 15908), (1358, 15252), (1722, 12028), (1736, 11931), (2037, 10168), (2296, 9021), (2328, 8897), (2542, 8148), (2604, 7954), (2716, 7626), (3007, 6888), (3444, 6014), (3813, 5432), (3977, 5208), (4074, 5084)]