9989800

素因数分解:

$2^3\times 5^2\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 23436000

約数和(自身を除く): 13446200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 199, 200, 251, 398, 502, 796, 995, 1004, 1255, 1592, 1990, 2008, 2510, 3980, 4975, 5020, 6275, 7960, 9950, 10040, 12550, 19900, 25100, 39800, 49949, 50200, 99898, 199796, 249745, 399592, 499490, 998980, 1248725, 1997960, 2497450, 4994900, 9989800]

約数ペア:

[(1, 9989800), (2, 4994900), (4, 2497450), (5, 1997960), (8, 1248725), (10, 998980), (20, 499490), (25, 399592), (40, 249745), (50, 199796), (100, 99898), (199, 50200), (200, 49949), (251, 39800), (398, 25100), (502, 19900), (796, 12550), (995, 10040), (1004, 9950), (1255, 7960), (1592, 6275), (1990, 5020), (2008, 4975), (2510, 3980)]