28563777

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{2647}}^1$

素因数の和:2773

約数の個数: 24

約数和(自身を含む): 45439680

約数和(自身を除く): 16875903

約数列:

[1, 3, 9, 11, 33, 99, 109, 327, 981, 1199, 2647, 3597, 7941, 10791, 23823, 29117, 87351, 262053, 288523, 865569, 2596707, 3173753, 9521259, 28563777]

約数ペア:

[(1, 28563777), (3, 9521259), (9, 3173753), (11, 2596707), (33, 865569), (99, 288523), (109, 262053), (327, 87351), (981, 29117), (1199, 23823), (2647, 10791), (3597, 7941)]