21569787

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{46993}}^1$

素因数の和:47019

約数の個数: 16

約数和(自身を含む): 33835680

約数和(自身を除く): 12265893

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 46993, 140979, 422937, 798881, 1268811, 2396643, 7189929, 21569787]

約数ペア:

[(1, 21569787), (3, 7189929), (9, 2396643), (17, 1268811), (27, 798881), (51, 422937), (153, 140979), (459, 46993)]