20642967

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1301}}^1$

素因数の和:1391

約数の個数: 24

約数和(自身を含む): 31279248

約数和(自身を除く): 10636281

約数列:

[1, 3, 9, 41, 43, 123, 129, 369, 387, 1301, 1763, 3903, 5289, 11709, 15867, 53341, 55943, 160023, 167829, 480069, 503487, 2293663, 6880989, 20642967]

約数ペア:

[(1, 20642967), (3, 6880989), (9, 2293663), (41, 503487), (43, 480069), (123, 167829), (129, 160023), (369, 55943), (387, 53341), (1301, 15867), (1763, 11709), (3903, 5289)]