20680721

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1489}}^1$

素因数の和:1568

約数の個数: 16

約数和(自身を含む): 23601600

約数和(自身を除く): 2920879

約数列:

[1, 17, 19, 43, 323, 731, 817, 1489, 13889, 25313, 28291, 64027, 480947, 1088459, 1216513, 20680721]

約数ペア:

[(1, 20680721), (17, 1216513), (19, 1088459), (43, 480947), (323, 64027), (731, 28291), (817, 25313), (1489, 13889)]