20170521

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2521}}^1$

素因数の和:2661

約数の個数: 24

約数和(自身を含む): 33572864

約数和(自身を除く): 13402343

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2521, 2667, 7563, 8001, 17647, 22689, 52941, 158823, 320167, 960501, 2241169, 2881503, 6723507, 20170521]

約数ペア:

[(1, 20170521), (3, 6723507), (7, 2881503), (9, 2241169), (21, 960501), (63, 320167), (127, 158823), (381, 52941), (889, 22689), (1143, 17647), (2521, 8001), (2667, 7563)]