18890473

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:468

約数の個数: 16

約数和(自身を含む): 22118400

約数和(自身を除く): 3227927

約数列:

[1, 7, 71, 191, 199, 497, 1337, 1393, 13561, 14129, 38009, 94927, 98903, 266063, 2698639, 18890473]

約数ペア:

[(1, 18890473), (7, 2698639), (71, 266063), (191, 98903), (199, 94927), (497, 38009), (1337, 14129), (1393, 13561)]