2169100

素因数分解:

$2^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:322

約数の個数: 36

約数和(自身を含む): 4774000

約数和(自身を除く): 2604900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 199, 218, 398, 436, 545, 796, 995, 1090, 1990, 2180, 2725, 3980, 4975, 5450, 9950, 10900, 19900, 21691, 43382, 86764, 108455, 216910, 433820, 542275, 1084550, 2169100]

約数ペア:

[(1, 2169100), (2, 1084550), (4, 542275), (5, 433820), (10, 216910), (20, 108455), (25, 86764), (50, 43382), (100, 21691), (109, 19900), (199, 10900), (218, 9950), (398, 5450), (436, 4975), (545, 3980), (796, 2725), (995, 2180), (1090, 1990)]