199939280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{661}}^1$

素因数の和:892

約数の個数: 80

約数和(自身を含む): 492528000

約数和(自身を除く): 292588720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 199, 304, 380, 398, 661, 760, 796, 995, 1322, 1520, 1592, 1990, 2644, 3184, 3305, 3781, 3980, 5288, 6610, 7562, 7960, 10576, 12559, 13220, 15124, 15920, 18905, 25118, 26440, 30248, 37810, 50236, 52880, 60496, 62795, 75620, 100472, 125590, 131539, 151240, 200944, 251180, 263078, 302480, 502360, 526156, 657695, 1004720, 1052312, 1315390, 2104624, 2499241, 2630780, 4998482, 5261560, 9996964, 10523120, 12496205, 19993928, 24992410, 39987856, 49984820, 99969640, 199939280]

約数ペア:

[(1, 199939280), (2, 99969640), (4, 49984820), (5, 39987856), (8, 24992410), (10, 19993928), (16, 12496205), (19, 10523120), (20, 9996964), (38, 5261560), (40, 4998482), (76, 2630780), (80, 2499241), (95, 2104624), (152, 1315390), (190, 1052312), (199, 1004720), (304, 657695), (380, 526156), (398, 502360), (661, 302480), (760, 263078), (796, 251180), (995, 200944), (1322, 151240), (1520, 131539), (1592, 125590), (1990, 100472), (2644, 75620), (3184, 62795), (3305, 60496), (3781, 52880), (3980, 50236), (5288, 37810), (6610, 30248), (7562, 26440), (7960, 25118), (10576, 18905), (12559, 15920), (13220, 15124)]