21299967

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{593}}^1$

素因数の和:919

約数の個数: 24

約数和(自身を含む): 33297264

約数和(自身を除く): 11997297

約数列:

[1, 3, 9, 13, 39, 117, 307, 593, 921, 1779, 2763, 3991, 5337, 7709, 11973, 23127, 35919, 69381, 182051, 546153, 1638459, 2366663, 7099989, 21299967]

約数ペア:

[(1, 21299967), (3, 7099989), (9, 2366663), (13, 1638459), (39, 546153), (117, 182051), (307, 69381), (593, 35919), (921, 23127), (1779, 11973), (2763, 7709), (3991, 5337)]