18890009

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{251}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 21228480

約数和(自身を除く): 2338471

約数列:

[1, 17, 19, 233, 251, 323, 3961, 4267, 4427, 4769, 58483, 75259, 81073, 994211, 1111177, 18890009]

約数ペア:

[(1, 18890009), (17, 1111177), (19, 994211), (233, 81073), (251, 75259), (323, 58483), (3961, 4769), (4267, 4427)]