19978291

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{317}}^1$

素因数の和:474

約数の個数: 16

約数和(自身を含む): 21980160

約数和(自身を除く): 2001869

約数列:

[1, 19, 31, 107, 317, 589, 2033, 3317, 6023, 9827, 33919, 63023, 186713, 644461, 1051489, 19978291]

約数ペア:

[(1, 19978291), (19, 1051489), (31, 644461), (107, 186713), (317, 63023), (589, 33919), (2033, 9827), (3317, 6023)]