20558085

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31873}}^1$

素因数の和:31924

約数の個数: 16

約数和(自身を含む): 33658944

約数和(自身を除く): 13100859

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31873, 95619, 159365, 478095, 1370539, 4111617, 6852695, 20558085]

約数ペア:

[(1, 20558085), (3, 6852695), (5, 4111617), (15, 1370539), (43, 478095), (129, 159365), (215, 95619), (645, 31873)]