21911888

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{12799}}^1$

素因数の和:12914

約数の個数: 20

約数和(自身を含む): 42854400

約数和(自身を除く): 20942512

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 12799, 25598, 51196, 102392, 204784, 1369493, 2738986, 5477972, 10955944, 21911888]

約数ペア:

[(1, 21911888), (2, 10955944), (4, 5477972), (8, 2738986), (16, 1369493), (107, 204784), (214, 102392), (428, 51196), (856, 25598), (1712, 12799)]