81689216

素因数分解:

$2^7\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:242

約数の個数: 128

約数和(自身を含む): 204456960

約数和(自身を除く): 122767744

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 31, 32, 34, 56, 62, 64, 68, 112, 119, 124, 128, 136, 173, 217, 224, 238, 248, 272, 346, 434, 448, 476, 496, 527, 544, 692, 868, 896, 952, 992, 1054, 1088, 1211, 1384, 1736, 1904, 1984, 2108, 2176, 2422, 2768, 2941, 3472, 3689, 3808, 3968, 4216, 4844, 5363, 5536, 5882, 6944, 7378, 7616, 8432, 9688, 10726, 11072, 11764, 13888, 14756, 15232, 16864, 19376, 20587, 21452, 22144, 23528, 27776, 29512, 33728, 37541, 38752, 41174, 42904, 47056, 59024, 67456, 75082, 77504, 82348, 85808, 91171, 94112, 118048, 150164, 155008, 164696, 171616, 182342, 188224, 236096, 300328, 329392, 343232, 364684, 376448, 472192, 600656, 638197, 658784, 686464, 729368, 1201312, 1276394, 1317568, 1458736, 2402624, 2552788, 2635136, 2917472, 4805248, 5105576, 5834944, 10211152, 11669888, 20422304, 40844608, 81689216]

約数ペア:

[(1, 81689216), (2, 40844608), (4, 20422304), (7, 11669888), (8, 10211152), (14, 5834944), (16, 5105576), (17, 4805248), (28, 2917472), (31, 2635136), (32, 2552788), (34, 2402624), (56, 1458736), (62, 1317568), (64, 1276394), (68, 1201312), (112, 729368), (119, 686464), (124, 658784), (128, 638197), (136, 600656), (173, 472192), (217, 376448), (224, 364684), (238, 343232), (248, 329392), (272, 300328), (346, 236096), (434, 188224), (448, 182342), (476, 171616), (496, 164696), (527, 155008), (544, 150164), (692, 118048), (868, 94112), (896, 91171), (952, 85808), (992, 82348), (1054, 77504), (1088, 75082), (1211, 67456), (1384, 59024), (1736, 47056), (1904, 42904), (1984, 41174), (2108, 38752), (2176, 37541), (2422, 33728), (2768, 29512), (2941, 27776), (3472, 23528), (3689, 22144), (3808, 21452), (3968, 20587), (4216, 19376), (4844, 16864), (5363, 15232), (5536, 14756), (5882, 13888), (6944, 11764), (7378, 11072), (7616, 10726), (8432, 9688)]