20369545

素因数分解:

$5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1171}}^1$

素因数の和:1261

約数の個数: 24

約数和(自身を含む): 28859328

約数和(自身を除く): 8489783

約数列:

[1, 5, 7, 35, 49, 71, 245, 355, 497, 1171, 2485, 3479, 5855, 8197, 17395, 40985, 57379, 83141, 286895, 415705, 581987, 2909935, 4073909, 20369545]

約数ペア:

[(1, 20369545), (5, 4073909), (7, 2909935), (35, 581987), (49, 415705), (71, 286895), (245, 83141), (355, 57379), (497, 40985), (1171, 17395), (2485, 8197), (3479, 5855)]