21148533

素因数分解:

$3^5\times 7^1\times {\mathrm{12433}}^1$

素因数の和:12455

約数の個数: 24

約数和(自身を含む): 36207808

約数和(自身を除く): 15059275

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12433, 37299, 87031, 111897, 261093, 335691, 783279, 1007073, 2349837, 3021219, 7049511, 21148533]

約数ペア:

[(1, 21148533), (3, 7049511), (7, 3021219), (9, 2349837), (21, 1007073), (27, 783279), (63, 335691), (81, 261093), (189, 111897), (243, 87031), (567, 37299), (1701, 12433)]