20638891

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{673}}^1$

素因数の和:1030

約数の個数: 16

約数和(自身を含む): 25514944

約数和(自身を除く): 4876053

約数列:

[1, 7, 13, 91, 337, 673, 2359, 4381, 4711, 8749, 30667, 61243, 226801, 1587607, 2948413, 20638891]

約数ペア:

[(1, 20638891), (7, 2948413), (13, 1587607), (91, 226801), (337, 61243), (673, 30667), (2359, 8749), (4381, 4711)]