20417956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1279}}^1$

素因数の和:1603

約数の個数: 24

約数和(自身を含む): 38635520

約数和(自身を除く): 18217564

約数列:

[1, 2, 4, 13, 26, 52, 307, 614, 1228, 1279, 2558, 3991, 5116, 7982, 15964, 16627, 33254, 66508, 392653, 785306, 1570612, 5104489, 10208978, 20417956]

約数ペア:

[(1, 20417956), (2, 10208978), (4, 5104489), (13, 1570612), (26, 785306), (52, 392653), (307, 66508), (614, 33254), (1228, 16627), (1279, 15964), (2558, 7982), (3991, 5116)]