21128128

素因数分解:

$2^6\times 7^1\times {\mathrm{47161}}^1$

素因数の和:47180

約数の個数: 28

約数和(自身を含む): 47916592

約数和(自身を除く): 26788464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 224, 448, 47161, 94322, 188644, 330127, 377288, 660254, 754576, 1320508, 1509152, 2641016, 3018304, 5282032, 10564064, 21128128]

約数ペア:

[(1, 21128128), (2, 10564064), (4, 5282032), (7, 3018304), (8, 2641016), (14, 1509152), (16, 1320508), (28, 754576), (32, 660254), (56, 377288), (64, 330127), (112, 188644), (224, 94322), (448, 47161)]