21690141

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{7919}}^1$

素因数の和:8016

約数の個数: 16

約数和(自身を含む): 31933440

約数和(自身を除く): 10243299

約数列:

[1, 3, 11, 33, 83, 249, 913, 2739, 7919, 23757, 87109, 261327, 657277, 1971831, 7230047, 21690141]

約数ペア:

[(1, 21690141), (3, 7230047), (11, 1971831), (33, 657277), (83, 261327), (249, 87109), (913, 23757), (2739, 7919)]