81504720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:322

約数の個数: 240

約数和(自身を含む): 307105344

約数和(自身を除く): 225600624

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 41, 44, 45, 48, 55, 60, 66, 72, 80, 82, 88, 90, 99, 110, 120, 123, 132, 144, 164, 165, 176, 180, 198, 205, 220, 240, 246, 251, 264, 328, 330, 360, 369, 396, 410, 440, 451, 492, 495, 502, 528, 615, 656, 660, 720, 738, 753, 792, 820, 880, 902, 984, 990, 1004, 1230, 1255, 1320, 1353, 1476, 1506, 1584, 1640, 1804, 1845, 1968, 1980, 2008, 2255, 2259, 2460, 2510, 2640, 2706, 2761, 2952, 3012, 3280, 3608, 3690, 3765, 3960, 4016, 4059, 4510, 4518, 4920, 5020, 5412, 5522, 5904, 6024, 6765, 7216, 7380, 7530, 7920, 8118, 8283, 9020, 9036, 9840, 10040, 10291, 10824, 11044, 11295, 12048, 13530, 13805, 14760, 15060, 16236, 16566, 18040, 18072, 20080, 20295, 20582, 21648, 22088, 22590, 24849, 27060, 27610, 29520, 30120, 30873, 32472, 33132, 36080, 36144, 40590, 41164, 41415, 44176, 45180, 49698, 51455, 54120, 55220, 60240, 61746, 64944, 66264, 81180, 82328, 82830, 90360, 92619, 99396, 102910, 108240, 110440, 113201, 123492, 124245, 132528, 154365, 162360, 164656, 165660, 180720, 185238, 198792, 205820, 220880, 226402, 246984, 248490, 308730, 324720, 331320, 339603, 370476, 397584, 411640, 452804, 463095, 493968, 496980, 566005, 617460, 662640, 679206, 740952, 823280, 905608, 926190, 993960, 1018809, 1132010, 1234920, 1358412, 1481904, 1698015, 1811216, 1852380, 1987920, 2037618, 2264020, 2469840, 2716824, 3396030, 3704760, 4075236, 4528040, 5094045, 5433648, 6792060, 7409520, 8150472, 9056080, 10188090, 13584120, 16300944, 20376180, 27168240, 40752360, 81504720]

約数ペア:

[(1, 81504720), (2, 40752360), (3, 27168240), (4, 20376180), (5, 16300944), (6, 13584120), (8, 10188090), (9, 9056080), (10, 8150472), (11, 7409520), (12, 6792060), (15, 5433648), (16, 5094045), (18, 4528040), (20, 4075236), (22, 3704760), (24, 3396030), (30, 2716824), (33, 2469840), (36, 2264020), (40, 2037618), (41, 1987920), (44, 1852380), (45, 1811216), (48, 1698015), (55, 1481904), (60, 1358412), (66, 1234920), (72, 1132010), (80, 1018809), (82, 993960), (88, 926190), (90, 905608), (99, 823280), (110, 740952), (120, 679206), (123, 662640), (132, 617460), (144, 566005), (164, 496980), (165, 493968), (176, 463095), (180, 452804), (198, 411640), (205, 397584), (220, 370476), (240, 339603), (246, 331320), (251, 324720), (264, 308730), (328, 248490), (330, 246984), (360, 226402), (369, 220880), (396, 205820), (410, 198792), (440, 185238), (451, 180720), (492, 165660), (495, 164656), (502, 162360), (528, 154365), (615, 132528), (656, 124245), (660, 123492), (720, 113201), (738, 110440), (753, 108240), (792, 102910), (820, 99396), (880, 92619), (902, 90360), (984, 82830), (990, 82328), (1004, 81180), (1230, 66264), (1255, 64944), (1320, 61746), (1353, 60240), (1476, 55220), (1506, 54120), (1584, 51455), (1640, 49698), (1804, 45180), (1845, 44176), (1968, 41415), (1980, 41164), (2008, 40590), (2255, 36144), (2259, 36080), (2460, 33132), (2510, 32472), (2640, 30873), (2706, 30120), (2761, 29520), (2952, 27610), (3012, 27060), (3280, 24849), (3608, 22590), (3690, 22088), (3765, 21648), (3960, 20582), (4016, 20295), (4059, 20080), (4510, 18072), (4518, 18040), (4920, 16566), (5020, 16236), (5412, 15060), (5522, 14760), (5904, 13805), (6024, 13530), (6765, 12048), (7216, 11295), (7380, 11044), (7530, 10824), (7920, 10291), (8118, 10040), (8283, 9840), (9020, 9036)]