256565991

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{72661}}^1$

素因数の和:72782

約数の個数: 16

約数和(自身を含む): 376679808

約数和(自身を除く): 120113817

約数列:

[1, 3, 11, 33, 107, 321, 1177, 3531, 72661, 217983, 799271, 2397813, 7774727, 23324181, 85521997, 256565991]

約数ペア:

[(1, 256565991), (3, 85521997), (11, 23324181), (33, 7774727), (107, 2397813), (321, 799271), (1177, 217983), (3531, 72661)]