21497095

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{5381}}^1$

素因数の和:5450

約数の個数: 16

約数和(自身を含む): 27900288

約数和(自身を除く): 6403193

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 5381, 26905, 91477, 252907, 457385, 1264535, 4299419, 21497095]

約数ペア:

[(1, 21497095), (5, 4299419), (17, 1264535), (47, 457385), (85, 252907), (235, 91477), (799, 26905), (3995, 5381)]