18389390

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{16871}}^1$

素因数の和:16987

約数の個数: 16

約数和(自身を含む): 33406560

約数和(自身を除く): 15017170

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 16871, 33742, 84355, 168710, 1838939, 3677878, 9194695, 18389390]

約数ペア:

[(1, 18389390), (2, 9194695), (5, 3677878), (10, 1838939), (109, 168710), (218, 84355), (545, 33742), (1090, 16871)]