81813605

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{20479}}^1$

素因数の和:20548

約数の個数: 16

約数和(自身を含む): 106168320

約数和(自身を除く): 24354715

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 20479, 102395, 348143, 962513, 1740715, 4812565, 16362721, 81813605]

約数ペア:

[(1, 81813605), (5, 16362721), (17, 4812565), (47, 1740715), (85, 962513), (235, 348143), (799, 102395), (3995, 20479)]