20904816

素因数分解:

$2^4\times 3^1\times {\mathrm{491}}^1\times {\mathrm{887}}^1$

素因数の和:1389

約数の個数: 40

約数和(自身を含む): 54175104

約数和(自身を除く): 33270288

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 491, 887, 982, 1473, 1774, 1964, 2661, 2946, 3548, 3928, 5322, 5892, 7096, 7856, 10644, 11784, 14192, 21288, 23568, 42576, 435517, 871034, 1306551, 1742068, 2613102, 3484136, 5226204, 6968272, 10452408, 20904816]

約数ペア:

[(1, 20904816), (2, 10452408), (3, 6968272), (4, 5226204), (6, 3484136), (8, 2613102), (12, 1742068), (16, 1306551), (24, 871034), (48, 435517), (491, 42576), (887, 23568), (982, 21288), (1473, 14192), (1774, 11784), (1964, 10644), (2661, 7856), (2946, 7096), (3548, 5892), (3928, 5322)]