20493648

素因数分解:

$2^4\times 3^6\times 7^1\times {\mathrm{251}}^1$

素因数の和:284

約数の個数: 140

約数和(自身を含む): 68308128

約数和(自身を除く): 47814480

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 48, 54, 56, 63, 72, 81, 84, 108, 112, 126, 144, 162, 168, 189, 216, 243, 251, 252, 324, 336, 378, 432, 486, 502, 504, 567, 648, 729, 753, 756, 972, 1004, 1008, 1134, 1296, 1458, 1506, 1512, 1701, 1757, 1944, 2008, 2259, 2268, 2916, 3012, 3024, 3402, 3514, 3888, 4016, 4518, 4536, 5103, 5271, 5832, 6024, 6777, 6804, 7028, 9036, 9072, 10206, 10542, 11664, 12048, 13554, 13608, 14056, 15813, 18072, 20331, 20412, 21084, 27108, 27216, 28112, 31626, 36144, 40662, 40824, 42168, 47439, 54216, 60993, 63252, 81324, 81648, 84336, 94878, 108432, 121986, 126504, 142317, 162648, 182979, 189756, 243972, 253008, 284634, 325296, 365958, 379512, 426951, 487944, 569268, 731916, 759024, 853902, 975888, 1138536, 1280853, 1463832, 1707804, 2277072, 2561706, 2927664, 3415608, 5123412, 6831216, 10246824, 20493648]

約数ペア:

[(1, 20493648), (2, 10246824), (3, 6831216), (4, 5123412), (6, 3415608), (7, 2927664), (8, 2561706), (9, 2277072), (12, 1707804), (14, 1463832), (16, 1280853), (18, 1138536), (21, 975888), (24, 853902), (27, 759024), (28, 731916), (36, 569268), (42, 487944), (48, 426951), (54, 379512), (56, 365958), (63, 325296), (72, 284634), (81, 253008), (84, 243972), (108, 189756), (112, 182979), (126, 162648), (144, 142317), (162, 126504), (168, 121986), (189, 108432), (216, 94878), (243, 84336), (251, 81648), (252, 81324), (324, 63252), (336, 60993), (378, 54216), (432, 47439), (486, 42168), (502, 40824), (504, 40662), (567, 36144), (648, 31626), (729, 28112), (753, 27216), (756, 27108), (972, 21084), (1004, 20412), (1008, 20331), (1134, 18072), (1296, 15813), (1458, 14056), (1506, 13608), (1512, 13554), (1701, 12048), (1757, 11664), (1944, 10542), (2008, 10206), (2259, 9072), (2268, 9036), (2916, 7028), (3012, 6804), (3024, 6777), (3402, 6024), (3514, 5832), (3888, 5271), (4016, 5103), (4518, 4536)]