19990509

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{86539}}^1$

素因数の和:86560

約数の個数: 16

約数和(自身を含む): 33231360

約数和(自身を除く): 13240851

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 86539, 259617, 605773, 951929, 1817319, 2855787, 6663503, 19990509]

約数ペア:

[(1, 19990509), (3, 6663503), (7, 2855787), (11, 1817319), (21, 951929), (33, 605773), (77, 259617), (231, 86539)]