20213919

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{2797}}^1$

素因数の和:2887

約数の個数: 24

約数和(自身を含む): 32300112

約数和(自身を除く): 12086193

約数列:

[1, 3, 9, 11, 33, 73, 99, 219, 657, 803, 2409, 2797, 7227, 8391, 25173, 30767, 92301, 204181, 276903, 612543, 1837629, 2245991, 6737973, 20213919]

約数ペア:

[(1, 20213919), (3, 6737973), (9, 2245991), (11, 1837629), (33, 612543), (73, 276903), (99, 204181), (219, 92301), (657, 30767), (803, 25173), (2409, 8391), (2797, 7227)]