21091888

素因数分解:

$2^4\times {\mathrm{277}}^1\times {\mathrm{4759}}^1$

素因数の和:5044

約数の個数: 20

約数和(自身を含む): 41021680

約数和(自身を除く): 19929792

約数列:

[1, 2, 4, 8, 16, 277, 554, 1108, 2216, 4432, 4759, 9518, 19036, 38072, 76144, 1318243, 2636486, 5272972, 10545944, 21091888]

約数ペア:

[(1, 21091888), (2, 10545944), (4, 5272972), (8, 2636486), (16, 1318243), (277, 76144), (554, 38072), (1108, 19036), (2216, 9518), (4432, 4759)]