19865391

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{72767}}^1$

素因数の和:72790

約数の個数: 16

約数和(自身を含む): 32600064

約数和(自身を除く): 12734673

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 72767, 218301, 509369, 945971, 1528107, 2837913, 6621797, 19865391]

約数ペア:

[(1, 19865391), (3, 6621797), (7, 2837913), (13, 1528107), (21, 945971), (39, 509369), (91, 218301), (273, 72767)]