81811728

素因数分解:

$2^4\times 3^3\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:238

約数の個数: 160

約数和(自身を含む): 249984000

約数和(自身を除く): 168172272

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 36, 41, 48, 54, 62, 72, 82, 93, 108, 123, 124, 144, 149, 164, 186, 216, 246, 248, 279, 298, 328, 369, 372, 432, 447, 492, 496, 558, 596, 656, 738, 744, 837, 894, 984, 1107, 1116, 1192, 1271, 1341, 1476, 1488, 1674, 1788, 1968, 2214, 2232, 2384, 2542, 2682, 2952, 3348, 3576, 3813, 4023, 4428, 4464, 4619, 5084, 5364, 5904, 6109, 6696, 7152, 7626, 8046, 8856, 9238, 10168, 10728, 11439, 12218, 13392, 13857, 15252, 16092, 17712, 18327, 18476, 20336, 21456, 22878, 24436, 27714, 30504, 32184, 34317, 36654, 36952, 41571, 45756, 48872, 54981, 55428, 61008, 64368, 68634, 73308, 73904, 83142, 91512, 97744, 109962, 110856, 124713, 137268, 146616, 164943, 166284, 183024, 189379, 219924, 221712, 249426, 274536, 293232, 329886, 332568, 378758, 439848, 498852, 549072, 568137, 659772, 665136, 757516, 879696, 997704, 1136274, 1319544, 1515032, 1704411, 1995408, 2272548, 2639088, 3030064, 3408822, 4545096, 5113233, 6817644, 9090192, 10226466, 13635288, 20452932, 27270576, 40905864, 81811728]

約数ペア:

[(1, 81811728), (2, 40905864), (3, 27270576), (4, 20452932), (6, 13635288), (8, 10226466), (9, 9090192), (12, 6817644), (16, 5113233), (18, 4545096), (24, 3408822), (27, 3030064), (31, 2639088), (36, 2272548), (41, 1995408), (48, 1704411), (54, 1515032), (62, 1319544), (72, 1136274), (82, 997704), (93, 879696), (108, 757516), (123, 665136), (124, 659772), (144, 568137), (149, 549072), (164, 498852), (186, 439848), (216, 378758), (246, 332568), (248, 329886), (279, 293232), (298, 274536), (328, 249426), (369, 221712), (372, 219924), (432, 189379), (447, 183024), (492, 166284), (496, 164943), (558, 146616), (596, 137268), (656, 124713), (738, 110856), (744, 109962), (837, 97744), (894, 91512), (984, 83142), (1107, 73904), (1116, 73308), (1192, 68634), (1271, 64368), (1341, 61008), (1476, 55428), (1488, 54981), (1674, 48872), (1788, 45756), (1968, 41571), (2214, 36952), (2232, 36654), (2384, 34317), (2542, 32184), (2682, 30504), (2952, 27714), (3348, 24436), (3576, 22878), (3813, 21456), (4023, 20336), (4428, 18476), (4464, 18327), (4619, 17712), (5084, 16092), (5364, 15252), (5904, 13857), (6109, 13392), (6696, 12218), (7152, 11439), (7626, 10728), (8046, 10168), (8856, 9238)]