16660971

素因数分解:

$3^4\times {\mathrm{103}}^1\times {\mathrm{1997}}^1$

素因数の和:2112

約数の個数: 20

約数和(自身を含む): 25142832

約数和(自身を除く): 8481861

約数列:

[1, 3, 9, 27, 81, 103, 309, 927, 1997, 2781, 5991, 8343, 17973, 53919, 161757, 205691, 617073, 1851219, 5553657, 16660971]

約数ペア:

[(1, 16660971), (3, 5553657), (9, 1851219), (27, 617073), (81, 205691), (103, 161757), (309, 53919), (927, 17973), (1997, 8343), (2781, 5991)]