21384561

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{9127}}^1$

素因数の和:9212

約数の個数: 16

約数和(自身を含む): 31546368

約数和(自身を除く): 10161807

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 9127, 27381, 100397, 301191, 648017, 1944051, 7128187, 21384561]

約数ペア:

[(1, 21384561), (3, 7128187), (11, 1944051), (33, 648017), (71, 301191), (213, 100397), (781, 27381), (2343, 9127)]