21977379

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47881}}^1$

素因数の和:47907

約数の個数: 16

約数和(自身を含む): 34475040

約数和(自身を除く): 12497661

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 47881, 143643, 430929, 813977, 1292787, 2441931, 7325793, 21977379]

約数ペア:

[(1, 21977379), (3, 7325793), (9, 2441931), (17, 1292787), (27, 813977), (51, 430929), (153, 143643), (459, 47881)]