31680800

素因数分解:

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

素因数の和:418

約数の個数: 54

約数和(自身を含む): 77731353

約数和(自身を除く): 46050553

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 199, 200, 398, 400, 796, 800, 995, 1592, 1990, 3184, 3980, 4975, 6368, 7960, 9950, 15920, 19900, 31840, 39601, 39800, 79202, 79600, 158404, 159200, 198005, 316808, 396010, 633616, 792020, 990025, 1267232, 1584040, 1980050, 3168080, 3960100, 6336160, 7920200, 15840400, 31680800]

約数ペア:

[(1, 31680800), (2, 15840400), (4, 7920200), (5, 6336160), (8, 3960100), (10, 3168080), (16, 1980050), (20, 1584040), (25, 1267232), (32, 990025), (40, 792020), (50, 633616), (80, 396010), (100, 316808), (160, 198005), (199, 159200), (200, 158404), (398, 79600), (400, 79202), (796, 39800), (800, 39601), (995, 31840), (1592, 19900), (1990, 15920), (3184, 9950), (3980, 7960), (4975, 6368)]