81978879

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{18061}}^1$

素因数の和:18170

約数の個数: 16

約数和(自身を含む): 117041760

約数和(自身を除く): 35062881

約数列:

[1, 3, 17, 51, 89, 267, 1513, 4539, 18061, 54183, 307037, 921111, 1607429, 4822287, 27326293, 81978879]

約数ペア:

[(1, 81978879), (3, 27326293), (17, 4822287), (51, 1607429), (89, 921111), (267, 307037), (1513, 54183), (4539, 18061)]