13181991

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{823}}^1$

素因数の和:1126

約数の個数: 16

約数和(自身を含む): 18589440

約数和(自身を除く): 5407449

約数列:

[1, 3, 19, 57, 281, 823, 843, 2469, 5339, 15637, 16017, 46911, 231263, 693789, 4393997, 13181991]

約数ペア:

[(1, 13181991), (3, 4393997), (19, 693789), (57, 231263), (281, 46911), (823, 16017), (843, 15637), (2469, 5339)]