20497239

素因数分解:

$3^3\times 7^2\times {\mathrm{15493}}^1$

素因数の和:15516

約数の個数: 24

約数和(自身を含む): 35326320

約数和(自身を除く): 14829081

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15493, 46479, 108451, 139437, 325353, 418311, 759157, 976059, 2277471, 2928177, 6832413, 20497239]

約数ペア:

[(1, 20497239), (3, 6832413), (7, 2928177), (9, 2277471), (21, 976059), (27, 759157), (49, 418311), (63, 325353), (147, 139437), (189, 108451), (441, 46479), (1323, 15493)]