13420515

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20807}}^1$

素因数の和:20858

約数の個数: 16

約数和(自身を含む): 21973248

約数和(自身を除く): 8552733

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 20807, 62421, 104035, 312105, 894701, 2684103, 4473505, 13420515]

約数ペア:

[(1, 13420515), (3, 4473505), (5, 2684103), (15, 894701), (43, 312105), (129, 104035), (215, 62421), (645, 20807)]