19597207

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 23836032

約数和(自身を除く): 4238825

約数列:

[1, 7, 43, 49, 71, 131, 301, 497, 917, 2107, 3053, 3479, 5633, 6419, 9301, 21371, 39431, 65107, 149597, 276017, 399943, 455749, 2799601, 19597207]

約数ペア:

[(1, 19597207), (7, 2799601), (43, 455749), (49, 399943), (71, 276017), (131, 149597), (301, 65107), (497, 39431), (917, 21371), (2107, 9301), (3053, 6419), (3479, 5633)]