638702939

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{31237}}^1$

素因数の和:31394

約数の個数: 16

約数和(自身を含む): 767705088

約数和(自身を除く): 129002149

約数列:

[1, 7, 23, 127, 161, 889, 2921, 20447, 31237, 218659, 718451, 3967099, 5029157, 27769693, 91243277, 638702939]

約数ペア:

[(1, 638702939), (7, 91243277), (23, 27769693), (127, 5029157), (161, 3967099), (889, 718451), (2921, 218659), (20447, 31237)]