21052707

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7603}}^1$

素因数の和:7690

約数の個数: 16

約数和(自身を含む): 30659328

約数和(自身を除く): 9606621

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7603, 22809, 98839, 296517, 539813, 1619439, 7017569, 21052707]

約数ペア:

[(1, 21052707), (3, 7017569), (13, 1619439), (39, 539813), (71, 296517), (213, 98839), (923, 22809), (2769, 7603)]