21337515

素因数分解:

$3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2909}}^1$

素因数の和:3083

約数の個数: 24

約数和(自身を含む): 37224720

約数和(自身を除く): 15887205

約数列:

[1, 3, 5, 9, 15, 45, 163, 489, 815, 1467, 2445, 2909, 7335, 8727, 14545, 26181, 43635, 130905, 474167, 1422501, 2370835, 4267503, 7112505, 21337515]

約数ペア:

[(1, 21337515), (3, 7112505), (5, 4267503), (9, 2370835), (15, 1422501), (45, 474167), (163, 130905), (489, 43635), (815, 26181), (1467, 14545), (2445, 8727), (2909, 7335)]