20697789

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{57977}}^1$

素因数の和:58004

約数の個数: 16

約数和(自身を含む): 33395328

約数和(自身を除く): 12697539

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 57977, 173931, 405839, 985609, 1217517, 2956827, 6899263, 20697789]

約数ペア:

[(1, 20697789), (3, 6899263), (7, 2956827), (17, 1217517), (21, 985609), (51, 405839), (119, 173931), (357, 57977)]