21906411

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{5413}}^1$

素因数の和:5506

約数の個数: 16

約数和(自身を含む): 31184640

約数和(自身を除く): 9278229

約数列:

[1, 3, 19, 57, 71, 213, 1349, 4047, 5413, 16239, 102847, 308541, 384323, 1152969, 7302137, 21906411]

約数ペア:

[(1, 21906411), (3, 7302137), (19, 1152969), (57, 384323), (71, 308541), (213, 102847), (1349, 16239), (4047, 5413)]