20498391

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:415

約数の個数: 24

約数和(自身を含む): 30317040

約数和(自身を除く): 9818649

約数列:

[1, 3, 9, 89, 157, 163, 267, 471, 489, 801, 1413, 1467, 13973, 14507, 25591, 41919, 43521, 76773, 125757, 130563, 230319, 2277599, 6832797, 20498391]

約数ペア:

[(1, 20498391), (3, 6832797), (9, 2277599), (89, 230319), (157, 130563), (163, 125757), (267, 76773), (471, 43521), (489, 41919), (801, 25591), (1413, 14507), (1467, 13973)]