18939862

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1\times {\mathrm{353}}^1$

素因数の和:687

約数の個数: 16

約数和(自身を含む): 28843920

約数和(自身を除く): 9904058

約数列:

[1, 2, 139, 193, 278, 353, 386, 706, 26827, 49067, 53654, 68129, 98134, 136258, 9469931, 18939862]

約数ペア:

[(1, 18939862), (2, 9469931), (139, 136258), (193, 98134), (278, 68129), (353, 53654), (386, 49067), (706, 26827)]