20406771

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2677}}^1$

素因数の和:2712

約数の個数: 36

約数和(自身を含む): 37042096

約数和(自身を除く): 16635325

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 121, 231, 363, 693, 847, 1089, 2541, 2677, 7623, 8031, 18739, 24093, 29447, 56217, 88341, 168651, 206129, 265023, 323917, 618387, 971751, 1855161, 2267419, 2915253, 6802257, 20406771]

約数ペア:

[(1, 20406771), (3, 6802257), (7, 2915253), (9, 2267419), (11, 1855161), (21, 971751), (33, 618387), (63, 323917), (77, 265023), (99, 206129), (121, 168651), (231, 88341), (363, 56217), (693, 29447), (847, 24093), (1089, 18739), (2541, 8031), (2677, 7623)]