18664247

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{16561}}^1$

素因数の和:16598

約数の個数: 12

約数和(自身を含む): 22656816

約数和(自身を除く): 3992569

約数列:

[1, 7, 23, 49, 161, 1127, 16561, 115927, 380903, 811489, 2666321, 18664247]

約数ペア:

[(1, 18664247), (7, 2666321), (23, 811489), (49, 380903), (161, 115927), (1127, 16561)]