217465785

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{284269}}^1$

素因数の和:284297

約数の個数: 24

約数和(自身を含む): 399115080

約数和(自身を除く): 181649295

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 284269, 852807, 1421345, 2558421, 4264035, 4832573, 12792105, 14497719, 24162865, 43493157, 72488595, 217465785]

約数ペア:

[(1, 217465785), (3, 72488595), (5, 43493157), (9, 24162865), (15, 14497719), (17, 12792105), (45, 4832573), (51, 4264035), (85, 2558421), (153, 1421345), (255, 852807), (765, 284269)]