99969640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{661}}^1$

素因数の和:890

約数の個数: 64

約数和(自身を含む): 238320000

約数和(自身を除く): 138350360

約数列:

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

約数ペア:

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