20971455

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82241}}^1$

素因数の和:82266

約数の個数: 16

約数和(自身を含む): 35528544

約数和(自身を除く): 14557089

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 82241, 246723, 411205, 1233615, 1398097, 4194291, 6990485, 20971455]

約数ペア:

[(1, 20971455), (3, 6990485), (5, 4194291), (15, 1398097), (17, 1233615), (51, 411205), (85, 246723), (255, 82241)]