19935789

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^2$

素因数の和:221

約数の個数: 24

約数和(自身を含む): 28527840

約数和(自身を除く): 8592051

約数列:

[1, 3, 29, 43, 73, 87, 129, 219, 1247, 2117, 3139, 3741, 5329, 6351, 9417, 15987, 91031, 154541, 229147, 273093, 463623, 687441, 6645263, 19935789]

約数ペア:

[(1, 19935789), (3, 6645263), (29, 687441), (43, 463623), (73, 273093), (87, 229147), (129, 154541), (219, 91031), (1247, 15987), (2117, 9417), (3139, 6351), (3741, 5329)]