12561983

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:267

約数の個数: 24

約数和(自身を含む): 15649920

約数和(自身を除く): 3087937

約数列:

[1, 7, 19, 49, 103, 131, 133, 721, 917, 931, 1957, 2489, 5047, 6419, 13493, 13699, 17423, 94451, 95893, 121961, 256367, 661157, 1794569, 12561983]

約数ペア:

[(1, 12561983), (7, 1794569), (19, 661157), (49, 256367), (103, 121961), (131, 95893), (133, 94451), (721, 17423), (917, 13699), (931, 13493), (1957, 6419), (2489, 5047)]