81143280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{449}}^1$

素因数の和:719

約数の個数: 120

約数和(自身を含む): 274201200

約数和(自身を除く): 193057920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 251, 360, 449, 502, 720, 753, 898, 1004, 1255, 1347, 1506, 1796, 2008, 2245, 2259, 2510, 2694, 3012, 3592, 3765, 4016, 4041, 4490, 4518, 5020, 5388, 6024, 6735, 7184, 7530, 8082, 8980, 9036, 10040, 10776, 11295, 12048, 13470, 15060, 16164, 17960, 18072, 20080, 20205, 21552, 22590, 26940, 30120, 32328, 35920, 36144, 40410, 45180, 53880, 60240, 64656, 80820, 90360, 107760, 112699, 161640, 180720, 225398, 323280, 338097, 450796, 563495, 676194, 901592, 1014291, 1126990, 1352388, 1690485, 1803184, 2028582, 2253980, 2704776, 3380970, 4057164, 4507960, 5071455, 5409552, 6761940, 8114328, 9015920, 10142910, 13523880, 16228656, 20285820, 27047760, 40571640, 81143280]

約数ペア:

[(1, 81143280), (2, 40571640), (3, 27047760), (4, 20285820), (5, 16228656), (6, 13523880), (8, 10142910), (9, 9015920), (10, 8114328), (12, 6761940), (15, 5409552), (16, 5071455), (18, 4507960), (20, 4057164), (24, 3380970), (30, 2704776), (36, 2253980), (40, 2028582), (45, 1803184), (48, 1690485), (60, 1352388), (72, 1126990), (80, 1014291), (90, 901592), (120, 676194), (144, 563495), (180, 450796), (240, 338097), (251, 323280), (360, 225398), (449, 180720), (502, 161640), (720, 112699), (753, 107760), (898, 90360), (1004, 80820), (1255, 64656), (1347, 60240), (1506, 53880), (1796, 45180), (2008, 40410), (2245, 36144), (2259, 35920), (2510, 32328), (2694, 30120), (3012, 26940), (3592, 22590), (3765, 21552), (4016, 20205), (4041, 20080), (4490, 18072), (4518, 17960), (5020, 16164), (5388, 15060), (6024, 13470), (6735, 12048), (7184, 11295), (7530, 10776), (8082, 10040), (8980, 9036)]