20874217

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12073}}^1$

素因数の和:12112

約数の個数: 16

約数和(自身を含む): 27045760

約数和(自身を除く): 6171543

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12073, 84511, 156949, 229387, 1098643, 1605709, 2982031, 20874217]

約数ペア:

[(1, 20874217), (7, 2982031), (13, 1605709), (19, 1098643), (91, 229387), (133, 156949), (247, 84511), (1729, 12073)]