20881942

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{911}}^1$

素因数の和:1143

約数の個数: 16

約数和(自身を含む): 31989312

約数和(自身を除く): 11107370

約数列:

[1, 2, 73, 146, 157, 314, 911, 1822, 11461, 22922, 66503, 133006, 143027, 286054, 10440971, 20881942]

約数ペア:

[(1, 20881942), (2, 10440971), (73, 286054), (146, 143027), (157, 133006), (314, 66503), (911, 22922), (1822, 11461)]