81250680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{491}}^1$

素因数の和:709

約数の個数: 128

約数和(自身を含む): 280558080

約数和(自身を除く): 199307400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 197, 210, 280, 394, 420, 491, 591, 788, 840, 982, 985, 1182, 1379, 1473, 1576, 1964, 1970, 2364, 2455, 2758, 2946, 2955, 3437, 3928, 3940, 4137, 4728, 4910, 5516, 5892, 5910, 6874, 6895, 7365, 7880, 8274, 9820, 10311, 11032, 11784, 11820, 13748, 13790, 14730, 16548, 17185, 19640, 20622, 20685, 23640, 27496, 27580, 29460, 33096, 34370, 41244, 41370, 51555, 55160, 58920, 68740, 82488, 82740, 96727, 103110, 137480, 165480, 193454, 206220, 290181, 386908, 412440, 483635, 580362, 677089, 773816, 967270, 1160724, 1354178, 1450905, 1934540, 2031267, 2321448, 2708356, 2901810, 3385445, 3869080, 4062534, 5416712, 5803620, 6770890, 8125068, 10156335, 11607240, 13541780, 16250136, 20312670, 27083560, 40625340, 81250680]

約数ペア:

[(1, 81250680), (2, 40625340), (3, 27083560), (4, 20312670), (5, 16250136), (6, 13541780), (7, 11607240), (8, 10156335), (10, 8125068), (12, 6770890), (14, 5803620), (15, 5416712), (20, 4062534), (21, 3869080), (24, 3385445), (28, 2901810), (30, 2708356), (35, 2321448), (40, 2031267), (42, 1934540), (56, 1450905), (60, 1354178), (70, 1160724), (84, 967270), (105, 773816), (120, 677089), (140, 580362), (168, 483635), (197, 412440), (210, 386908), (280, 290181), (394, 206220), (420, 193454), (491, 165480), (591, 137480), (788, 103110), (840, 96727), (982, 82740), (985, 82488), (1182, 68740), (1379, 58920), (1473, 55160), (1576, 51555), (1964, 41370), (1970, 41244), (2364, 34370), (2455, 33096), (2758, 29460), (2946, 27580), (2955, 27496), (3437, 23640), (3928, 20685), (3940, 20622), (4137, 19640), (4728, 17185), (4910, 16548), (5516, 14730), (5892, 13790), (5910, 13748), (6874, 11820), (6895, 11784), (7365, 11032), (7880, 10311), (8274, 9820)]