81495120

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{271}}^1$

素因数の和:473

約数の個数: 160

約数和(自身を含む): 291409920

約数和(自身を除く): 209914800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 179, 210, 240, 271, 280, 336, 358, 420, 537, 542, 560, 716, 813, 840, 895, 1074, 1084, 1253, 1355, 1432, 1626, 1680, 1790, 1897, 2148, 2168, 2506, 2685, 2710, 2864, 3252, 3580, 3759, 3794, 4065, 4296, 4336, 5012, 5370, 5420, 5691, 6265, 6504, 7160, 7518, 7588, 8130, 8592, 9485, 10024, 10740, 10840, 11382, 12530, 13008, 14320, 15036, 15176, 16260, 18795, 18970, 20048, 21480, 21680, 22764, 25060, 28455, 30072, 30352, 32520, 37590, 37940, 42960, 45528, 48509, 50120, 56910, 60144, 65040, 75180, 75880, 91056, 97018, 100240, 113820, 145527, 150360, 151760, 194036, 227640, 242545, 291054, 300720, 339563, 388072, 455280, 485090, 582108, 679126, 727635, 776144, 970180, 1018689, 1164216, 1358252, 1455270, 1697815, 1940360, 2037378, 2328432, 2716504, 2910540, 3395630, 3880720, 4074756, 5093445, 5433008, 5821080, 6791260, 8149512, 10186890, 11642160, 13582520, 16299024, 20373780, 27165040, 40747560, 81495120]

約数ペア:

[(1, 81495120), (2, 40747560), (3, 27165040), (4, 20373780), (5, 16299024), (6, 13582520), (7, 11642160), (8, 10186890), (10, 8149512), (12, 6791260), (14, 5821080), (15, 5433008), (16, 5093445), (20, 4074756), (21, 3880720), (24, 3395630), (28, 2910540), (30, 2716504), (35, 2328432), (40, 2037378), (42, 1940360), (48, 1697815), (56, 1455270), (60, 1358252), (70, 1164216), (80, 1018689), (84, 970180), (105, 776144), (112, 727635), (120, 679126), (140, 582108), (168, 485090), (179, 455280), (210, 388072), (240, 339563), (271, 300720), (280, 291054), (336, 242545), (358, 227640), (420, 194036), (537, 151760), (542, 150360), (560, 145527), (716, 113820), (813, 100240), (840, 97018), (895, 91056), (1074, 75880), (1084, 75180), (1253, 65040), (1355, 60144), (1432, 56910), (1626, 50120), (1680, 48509), (1790, 45528), (1897, 42960), (2148, 37940), (2168, 37590), (2506, 32520), (2685, 30352), (2710, 30072), (2864, 28455), (3252, 25060), (3580, 22764), (3759, 21680), (3794, 21480), (4065, 20048), (4296, 18970), (4336, 18795), (5012, 16260), (5370, 15176), (5420, 15036), (5691, 14320), (6265, 13008), (6504, 12530), (7160, 11382), (7518, 10840), (7588, 10740), (8130, 10024), (8592, 9485)]