18008181

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1987}}^1$

素因数の和:2065

約数の個数: 24

約数和(自身を含む): 27911520

約数和(自身を除く): 9903339

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 1987, 3021, 5961, 9063, 17883, 37753, 105311, 113259, 315933, 339777, 947799, 2000909, 6002727, 18008181]

約数ペア:

[(1, 18008181), (3, 6002727), (9, 2000909), (19, 947799), (53, 339777), (57, 315933), (159, 113259), (171, 105311), (477, 37753), (1007, 17883), (1987, 9063), (3021, 5961)]