49984820

素因数分解:

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

素因数の和:888

約数の個数: 48

約数和(自身を含む): 111216000

約数和(自身を除く): 61231180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 661, 796, 995, 1322, 1990, 2644, 3305, 3781, 3980, 6610, 7562, 12559, 13220, 15124, 18905, 25118, 37810, 50236, 62795, 75620, 125590, 131539, 251180, 263078, 526156, 657695, 1315390, 2499241, 2630780, 4998482, 9996964, 12496205, 24992410, 49984820]

約数ペア:

[(1, 49984820), (2, 24992410), (4, 12496205), (5, 9996964), (10, 4998482), (19, 2630780), (20, 2499241), (38, 1315390), (76, 657695), (95, 526156), (190, 263078), (199, 251180), (380, 131539), (398, 125590), (661, 75620), (796, 62795), (995, 50236), (1322, 37810), (1990, 25118), (2644, 18905), (3305, 15124), (3781, 13220), (3980, 12559), (6610, 7562)]