18278150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{199}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 19219450

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 167, 199, 275, 334, 398, 550, 835, 995, 1670, 1837, 1990, 2189, 3674, 4175, 4378, 4975, 8350, 9185, 9950, 10945, 18370, 21890, 33233, 45925, 54725, 66466, 91850, 109450, 166165, 332330, 365563, 731126, 830825, 1661650, 1827815, 3655630, 9139075, 18278150]

約数ペア:

[(1, 18278150), (2, 9139075), (5, 3655630), (10, 1827815), (11, 1661650), (22, 830825), (25, 731126), (50, 365563), (55, 332330), (110, 166165), (167, 109450), (199, 91850), (275, 66466), (334, 54725), (398, 45925), (550, 33233), (835, 21890), (995, 18370), (1670, 10945), (1837, 9950), (1990, 9185), (2189, 8350), (3674, 4975), (4175, 4378)]