81455983

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{431}}^1$

素因数の和:500

約数の個数: 32

約数和(自身を含む): 103680000

約数和(自身を除く): 22224017

約数列:

[1, 7, 19, 29, 49, 133, 203, 343, 431, 551, 931, 1421, 3017, 3857, 6517, 8189, 9947, 12499, 21119, 26999, 57323, 87493, 147833, 188993, 237481, 401261, 612451, 1662367, 2808827, 4287157, 11636569, 81455983]

約数ペア:

[(1, 81455983), (7, 11636569), (19, 4287157), (29, 2808827), (49, 1662367), (133, 612451), (203, 401261), (343, 237481), (431, 188993), (551, 147833), (931, 87493), (1421, 57323), (3017, 26999), (3857, 21119), (6517, 12499), (8189, 9947)]