12720757

素因数分解:

$7^1\times {\mathrm{31}}^3\times {\mathrm{61}}^1$

素因数の和:161

約数の個数: 16

約数和(自身を含む): 15268864

約数和(自身を除く): 2548107

約数列:

[1, 7, 31, 61, 217, 427, 961, 1891, 6727, 13237, 29791, 58621, 208537, 410347, 1817251, 12720757]

約数ペア:

[(1, 12720757), (7, 1817251), (31, 410347), (61, 208537), (217, 58621), (427, 29791), (961, 13237), (1891, 6727)]