81639219

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{487}}^1$

素因数の和:699

約数の個数: 32

約数和(自身を含む): 122273280

約数和(自身を除く): 40634061

約数列:

[1, 3, 17, 19, 51, 57, 173, 323, 487, 519, 969, 1461, 2941, 3287, 8279, 8823, 9253, 9861, 24837, 27759, 55879, 84251, 157301, 167637, 252753, 471903, 1432267, 1600769, 4296801, 4802307, 27213073, 81639219]

約数ペア:

[(1, 81639219), (3, 27213073), (17, 4802307), (19, 4296801), (51, 1600769), (57, 1432267), (173, 471903), (323, 252753), (487, 167637), (519, 157301), (969, 84251), (1461, 55879), (2941, 27759), (3287, 24837), (8279, 9861), (8823, 9253)]