19028919

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1621}}^1$

素因数の和:1687

約数の個数: 32

約数和(自身を含む): 31972864

約数和(自身を除く): 12943945

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1621, 1677, 3913, 4863, 11347, 11739, 21073, 34041, 63219, 69703, 147511, 209109, 442533, 487921, 906139, 1463763, 2718417, 6342973, 19028919]

約数ペア:

[(1, 19028919), (3, 6342973), (7, 2718417), (13, 1463763), (21, 906139), (39, 487921), (43, 442533), (91, 209109), (129, 147511), (273, 69703), (301, 63219), (559, 34041), (903, 21073), (1621, 11739), (1677, 11347), (3913, 4863)]