18425281

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{283}}^1$

素因数の和:492

約数の個数: 16

約数和(自身を含む): 21593088

約数和(自身を除く): 3167807

約数列:

[1, 7, 71, 131, 283, 497, 917, 1981, 9301, 20093, 37073, 65107, 140651, 259511, 2632183, 18425281]

約数ペア:

[(1, 18425281), (7, 2632183), (71, 259511), (131, 140651), (283, 65107), (497, 37073), (917, 20093), (1981, 9301)]