81979452

素因数分解:

$2^2\times 3^5\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1$

素因数の和:254

約数の個数: 144

約数和(自身を含む): 237269760

約数和(自身を除く): 155290308

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 23, 27, 36, 38, 46, 54, 57, 69, 76, 81, 92, 108, 114, 138, 162, 171, 193, 207, 228, 243, 276, 324, 342, 386, 414, 437, 486, 513, 579, 621, 684, 772, 828, 874, 972, 1026, 1158, 1242, 1311, 1539, 1737, 1748, 1863, 2052, 2316, 2484, 2622, 3078, 3474, 3667, 3726, 3933, 4439, 4617, 5211, 5244, 5589, 6156, 6948, 7334, 7452, 7866, 8878, 9234, 10422, 11001, 11178, 11799, 13317, 14668, 15633, 15732, 17756, 18468, 20844, 22002, 22356, 23598, 26634, 31266, 33003, 35397, 39951, 44004, 46899, 47196, 53268, 62532, 66006, 70794, 79902, 84341, 93798, 99009, 106191, 119853, 132012, 141588, 159804, 168682, 187596, 198018, 212382, 239706, 253023, 297027, 337364, 359559, 396036, 424764, 479412, 506046, 594054, 719118, 759069, 891081, 1012092, 1078677, 1188108, 1438236, 1518138, 1782162, 2157354, 2277207, 3036276, 3564324, 4314708, 4554414, 6831621, 9108828, 13663242, 20494863, 27326484, 40989726, 81979452]

約数ペア:

[(1, 81979452), (2, 40989726), (3, 27326484), (4, 20494863), (6, 13663242), (9, 9108828), (12, 6831621), (18, 4554414), (19, 4314708), (23, 3564324), (27, 3036276), (36, 2277207), (38, 2157354), (46, 1782162), (54, 1518138), (57, 1438236), (69, 1188108), (76, 1078677), (81, 1012092), (92, 891081), (108, 759069), (114, 719118), (138, 594054), (162, 506046), (171, 479412), (193, 424764), (207, 396036), (228, 359559), (243, 337364), (276, 297027), (324, 253023), (342, 239706), (386, 212382), (414, 198018), (437, 187596), (486, 168682), (513, 159804), (579, 141588), (621, 132012), (684, 119853), (772, 106191), (828, 99009), (874, 93798), (972, 84341), (1026, 79902), (1158, 70794), (1242, 66006), (1311, 62532), (1539, 53268), (1737, 47196), (1748, 46899), (1863, 44004), (2052, 39951), (2316, 35397), (2484, 33003), (2622, 31266), (3078, 26634), (3474, 23598), (3667, 22356), (3726, 22002), (3933, 20844), (4439, 18468), (4617, 17756), (5211, 15732), (5244, 15633), (5589, 14668), (6156, 13317), (6948, 11799), (7334, 11178), (7452, 11001), (7866, 10422), (8878, 9234)]