208520137

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{271}}^1\times {\mathrm{383}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 250048512

約数和(自身を除く): 41528375

約数列:

[1, 7, 41, 49, 271, 287, 383, 1897, 2009, 2681, 11111, 13279, 15703, 18767, 77777, 103793, 109921, 544439, 726551, 769447, 4255513, 5085857, 29788591, 208520137]

約数ペア:

[(1, 208520137), (7, 29788591), (41, 5085857), (49, 4255513), (271, 769447), (287, 726551), (383, 544439), (1897, 109921), (2009, 103793), (2681, 77777), (11111, 18767), (13279, 15703)]