21271888

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{120863}}^1$

素因数の和:120882

約数の個数: 20

約数和(自身を含む): 44961408

約数和(自身を除く): 23689520

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 120863, 241726, 483452, 966904, 1329493, 1933808, 2658986, 5317972, 10635944, 21271888]

約数ペア:

[(1, 21271888), (2, 10635944), (4, 5317972), (8, 2658986), (11, 1933808), (16, 1329493), (22, 966904), (44, 483452), (88, 241726), (176, 120863)]