21084855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{11617}}^1$

素因数の和:11647

約数の個数: 24

約数和(自身を含む): 37084656

約数和(自身を除く): 15999801

約数列:

[1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815, 11617, 34851, 58085, 127787, 174255, 383361, 638935, 1405657, 1916805, 4216971, 7028285, 21084855]

約数ペア:

[(1, 21084855), (3, 7028285), (5, 4216971), (11, 1916805), (15, 1405657), (33, 638935), (55, 383361), (121, 174255), (165, 127787), (363, 58085), (605, 34851), (1815, 11617)]