20566987

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2621}}^1$

素因数の和:2706

約数の個数: 16

約数和(自身を含む): 25171200

約数和(自身を除く): 4604213

約数列:

[1, 7, 19, 59, 133, 413, 1121, 2621, 7847, 18347, 49799, 154639, 348593, 1082473, 2938141, 20566987]

約数ペア:

[(1, 20566987), (7, 2938141), (19, 1082473), (59, 348593), (133, 154639), (413, 49799), (1121, 18347), (2621, 7847)]