21987477

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47903}}^1$

素因数の和:47929

約数の個数: 16

約数和(自身を含む): 34490880

約数和(自身を除く): 12503403

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 47903, 143709, 431127, 814351, 1293381, 2443053, 7329159, 21987477]

約数ペア:

[(1, 21987477), (3, 7329159), (9, 2443053), (17, 1293381), (27, 814351), (51, 431127), (153, 143709), (459, 47903)]