18780839

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{1277}}^1$

素因数の和:1486

約数の個数: 16

約数和(自身を含む): 23556096

約数和(自身を除く): 4775257

約数列:

[1, 7, 11, 77, 191, 1277, 1337, 2101, 8939, 14047, 14707, 98329, 243907, 1707349, 2682977, 18780839]

約数ペア:

[(1, 18780839), (7, 2682977), (11, 1707349), (77, 243907), (191, 98329), (1277, 14707), (1337, 14047), (2101, 8939)]