28912779

素因数分解:

$3^2\times 7^1\times {\mathrm{547}}^1\times {\mathrm{839}}^1$

素因数の和:1399

約数の個数: 24

約数和(自身を含む): 47873280

約数和(自身を除く): 18960501

約数列:

[1, 3, 7, 9, 21, 63, 547, 839, 1641, 2517, 3829, 4923, 5873, 7551, 11487, 17619, 34461, 52857, 458933, 1376799, 3212531, 4130397, 9637593, 28912779]

約数ペア:

[(1, 28912779), (3, 9637593), (7, 4130397), (9, 3212531), (21, 1376799), (63, 458933), (547, 52857), (839, 34461), (1641, 17619), (2517, 11487), (3829, 7551), (4923, 5873)]