81999216

素因数分解:

$2^4\times 3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:221

約数の個数: 200

約数和(自身を含む): 265510784

約数和(自身を除く): 183511568

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 31, 36, 39, 48, 52, 54, 62, 72, 78, 81, 93, 104, 108, 117, 124, 144, 156, 157, 162, 186, 208, 216, 234, 248, 279, 312, 314, 324, 351, 372, 403, 432, 468, 471, 496, 558, 624, 628, 648, 702, 744, 806, 837, 936, 942, 1053, 1116, 1209, 1256, 1296, 1404, 1413, 1488, 1612, 1674, 1872, 1884, 2041, 2106, 2232, 2418, 2511, 2512, 2808, 2826, 3224, 3348, 3627, 3768, 4082, 4212, 4239, 4464, 4836, 4867, 5022, 5616, 5652, 6123, 6448, 6696, 7254, 7536, 8164, 8424, 8478, 9672, 9734, 10044, 10881, 11304, 12246, 12717, 13392, 14508, 14601, 16328, 16848, 16956, 18369, 19344, 19468, 20088, 21762, 22608, 24492, 25434, 29016, 29202, 32643, 32656, 33912, 36738, 38936, 40176, 43524, 43803, 48984, 50868, 55107, 58032, 58404, 63271, 65286, 67824, 73476, 77872, 87048, 87606, 97968, 101736, 110214, 116808, 126542, 130572, 131409, 146952, 165321, 174096, 175212, 189813, 203472, 220428, 233616, 253084, 261144, 262818, 293904, 330642, 350424, 379626, 394227, 440856, 506168, 522288, 525636, 569439, 661284, 700848, 759252, 788454, 881712, 1012336, 1051272, 1138878, 1322568, 1518504, 1576908, 1708317, 2102544, 2277756, 2645136, 3037008, 3153816, 3416634, 4555512, 5124951, 6307632, 6833268, 9111024, 10249902, 13666536, 20499804, 27333072, 40999608, 81999216]

約数ペア:

[(1, 81999216), (2, 40999608), (3, 27333072), (4, 20499804), (6, 13666536), (8, 10249902), (9, 9111024), (12, 6833268), (13, 6307632), (16, 5124951), (18, 4555512), (24, 3416634), (26, 3153816), (27, 3037008), (31, 2645136), (36, 2277756), (39, 2102544), (48, 1708317), (52, 1576908), (54, 1518504), (62, 1322568), (72, 1138878), (78, 1051272), (81, 1012336), (93, 881712), (104, 788454), (108, 759252), (117, 700848), (124, 661284), (144, 569439), (156, 525636), (157, 522288), (162, 506168), (186, 440856), (208, 394227), (216, 379626), (234, 350424), (248, 330642), (279, 293904), (312, 262818), (314, 261144), (324, 253084), (351, 233616), (372, 220428), (403, 203472), (432, 189813), (468, 175212), (471, 174096), (496, 165321), (558, 146952), (624, 131409), (628, 130572), (648, 126542), (702, 116808), (744, 110214), (806, 101736), (837, 97968), (936, 87606), (942, 87048), (1053, 77872), (1116, 73476), (1209, 67824), (1256, 65286), (1296, 63271), (1404, 58404), (1413, 58032), (1488, 55107), (1612, 50868), (1674, 48984), (1872, 43803), (1884, 43524), (2041, 40176), (2106, 38936), (2232, 36738), (2418, 33912), (2511, 32656), (2512, 32643), (2808, 29202), (2826, 29016), (3224, 25434), (3348, 24492), (3627, 22608), (3768, 21762), (4082, 20088), (4212, 19468), (4239, 19344), (4464, 18369), (4836, 16956), (4867, 16848), (5022, 16328), (5616, 14601), (5652, 14508), (6123, 13392), (6448, 12717), (6696, 12246), (7254, 11304), (7536, 10881), (8164, 10044), (8424, 9734), (8478, 9672)]