21539247

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{3761}}^1$

素因数の和:3870

約数の個数: 16

約数和(自身を含む): 30336768

約数和(自身を除く): 8797521

約数列:

[1, 3, 23, 69, 83, 249, 1909, 3761, 5727, 11283, 86503, 259509, 312163, 936489, 7179749, 21539247]

約数ペア:

[(1, 21539247), (3, 7179749), (23, 936489), (69, 312163), (83, 259509), (249, 86503), (1909, 11283), (3761, 5727)]