12780811978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{903493}}^1$

素因数の和:904149

約数の個数: 16

約数和(自身を含む): 20946604896

約数和(自身を除く): 8165792918

約数列:

[1, 2, 11, 22, 643, 1286, 7073, 14146, 903493, 1806986, 9938423, 19876846, 580945999, 1161891998, 6390405989, 12780811978]

約数ペア:

[(1, 12780811978), (2, 6390405989), (11, 1161891998), (22, 580945999), (643, 19876846), (1286, 9938423), (7073, 1806986), (14146, 903493)]