20781387

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{6361}}^1$

素因数の和:6392

約数の個数: 24

約数和(自身を含む): 33845840

約数和(自身を除く): 13064453

約数列:

[1, 3, 9, 11, 27, 33, 99, 121, 297, 363, 1089, 3267, 6361, 19083, 57249, 69971, 171747, 209913, 629739, 769681, 1889217, 2309043, 6927129, 20781387]

約数ペア:

[(1, 20781387), (3, 6927129), (9, 2309043), (11, 1889217), (27, 769681), (33, 629739), (99, 209913), (121, 171747), (297, 69971), (363, 57249), (1089, 19083), (3267, 6361)]