18988771

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{313}}^1$

素因数の和:466

約数の個数: 16

約数和(自身を含む): 20899840

約数和(自身を除く): 1911069

約数列:

[1, 19, 31, 103, 313, 589, 1957, 3193, 5947, 9703, 32239, 60667, 184357, 612541, 999409, 18988771]

約数ペア:

[(1, 18988771), (19, 999409), (31, 612541), (103, 184357), (313, 60667), (589, 32239), (1957, 9703), (3193, 5947)]