19954971

素因数分解:

$3^3\times {\mathrm{641}}^1\times {\mathrm{1153}}^1$

素因数の和:1803

約数の個数: 16

約数和(自身を含む): 29634720

約数和(自身を除く): 9679749

約数列:

[1, 3, 9, 27, 641, 1153, 1923, 3459, 5769, 10377, 17307, 31131, 739073, 2217219, 6651657, 19954971]

約数ペア:

[(1, 19954971), (3, 6651657), (9, 2217219), (27, 739073), (641, 31131), (1153, 17307), (1923, 10377), (3459, 5769)]