158404000

素因数分解:

$2^5\times 5^3\times {\mathrm{199}}^2$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 391164228

約数和(自身を除く): 232760228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 199, 200, 250, 398, 400, 500, 796, 800, 995, 1000, 1592, 1990, 2000, 3184, 3980, 4000, 4975, 6368, 7960, 9950, 15920, 19900, 24875, 31840, 39601, 39800, 49750, 79202, 79600, 99500, 158404, 159200, 198005, 199000, 316808, 396010, 398000, 633616, 792020, 796000, 990025, 1267232, 1584040, 1980050, 3168080, 3960100, 4950125, 6336160, 7920200, 9900250, 15840400, 19800500, 31680800, 39601000, 79202000, 158404000]

約数ペア:

[(1, 158404000), (2, 79202000), (4, 39601000), (5, 31680800), (8, 19800500), (10, 15840400), (16, 9900250), (20, 7920200), (25, 6336160), (32, 4950125), (40, 3960100), (50, 3168080), (80, 1980050), (100, 1584040), (125, 1267232), (160, 990025), (199, 796000), (200, 792020), (250, 633616), (398, 398000), (400, 396010), (500, 316808), (796, 199000), (800, 198005), (995, 159200), (1000, 158404), (1592, 99500), (1990, 79600), (2000, 79202), (3184, 49750), (3980, 39800), (4000, 39601), (4975, 31840), (6368, 24875), (7960, 19900), (9950, 15920)]