201680720

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:468

約数の個数: 80

約数和(自身を含む): 480826368

約数和(自身を除く): 279145648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 191, 197, 268, 335, 382, 394, 536, 670, 764, 788, 955, 985, 1072, 1340, 1528, 1576, 1910, 1970, 2680, 3056, 3152, 3820, 3940, 5360, 7640, 7880, 12797, 13199, 15280, 15760, 25594, 26398, 37627, 51188, 52796, 63985, 65995, 75254, 102376, 105592, 127970, 131990, 150508, 188135, 204752, 211184, 255940, 263980, 301016, 376270, 511880, 527960, 602032, 752540, 1023760, 1055920, 1505080, 2521009, 3010160, 5042018, 10084036, 12605045, 20168072, 25210090, 40336144, 50420180, 100840360, 201680720]

約数ペア:

[(1, 201680720), (2, 100840360), (4, 50420180), (5, 40336144), (8, 25210090), (10, 20168072), (16, 12605045), (20, 10084036), (40, 5042018), (67, 3010160), (80, 2521009), (134, 1505080), (191, 1055920), (197, 1023760), (268, 752540), (335, 602032), (382, 527960), (394, 511880), (536, 376270), (670, 301016), (764, 263980), (788, 255940), (955, 211184), (985, 204752), (1072, 188135), (1340, 150508), (1528, 131990), (1576, 127970), (1910, 105592), (1970, 102376), (2680, 75254), (3056, 65995), (3152, 63985), (3820, 52796), (3940, 51188), (5360, 37627), (7640, 26398), (7880, 25594), (12797, 15760), (13199, 15280)]