20974761

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{7127}}^1$

素因数の和:7245

約数の個数: 16

約数和(自身を含む): 31363200

約数和(自身を除く): 10388439

約数列:

[1, 3, 9, 27, 109, 327, 981, 2943, 7127, 21381, 64143, 192429, 776843, 2330529, 6991587, 20974761]

約数ペア:

[(1, 20974761), (3, 6991587), (9, 2330529), (27, 776843), (109, 192429), (327, 64143), (981, 21381), (2943, 7127)]