1851340981

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{1988551}}^1$

素因数の和:1988584

約数の個数: 12

約数和(自身を含む): 2266949280

約数和(自身を除く): 415608299

約数列:

[1, 7, 19, 49, 133, 931, 1988551, 13919857, 37782469, 97438999, 264477283, 1851340981]

約数ペア:

[(1, 1851340981), (7, 264477283), (19, 97438999), (49, 37782469), (133, 13919857), (931, 1988551)]