39800

素因数分解:

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

素因数の和:215

約数の個数: 24

約数和(自身を含む): 93000

約数和(自身を除く): 53200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 199, 200, 398, 796, 995, 1592, 1990, 3980, 4975, 7960, 9950, 19900, 39800]

約数ペア:

[(1, 39800), (2, 19900), (4, 9950), (5, 7960), (8, 4975), (10, 3980), (20, 1990), (25, 1592), (40, 995), (50, 796), (100, 398), (199, 200)]