7840600

素因数分解:

$2^3\times 5^2\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 18414000

約数和(自身を除く): 10573400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 197, 199, 200, 394, 398, 788, 796, 985, 995, 1576, 1592, 1970, 1990, 3940, 3980, 4925, 4975, 7880, 7960, 9850, 9950, 19700, 19900, 39203, 39400, 39800, 78406, 156812, 196015, 313624, 392030, 784060, 980075, 1568120, 1960150, 3920300, 7840600]

約数ペア:

[(1, 7840600), (2, 3920300), (4, 1960150), (5, 1568120), (8, 980075), (10, 784060), (20, 392030), (25, 313624), (40, 196015), (50, 156812), (100, 78406), (197, 39800), (199, 39400), (200, 39203), (394, 19900), (398, 19700), (788, 9950), (796, 9850), (985, 7960), (995, 7880), (1576, 4975), (1592, 4925), (1970, 3980), (1990, 3940)]