19886997

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{1217}}^1$

素因数の和:1652

約数の個数: 16

約数和(自身を含む): 28647360

約数和(自身を除く): 8760363

約数列:

[1, 3, 13, 39, 419, 1217, 1257, 3651, 5447, 15821, 16341, 47463, 509923, 1529769, 6628999, 19886997]

約数ペア:

[(1, 19886997), (3, 6628999), (13, 1529769), (39, 509923), (419, 47463), (1217, 16341), (1257, 15821), (3651, 5447)]