20754897

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9727023

約数列:

[1, 3, 19, 41, 57, 83, 107, 123, 249, 321, 779, 1577, 2033, 2337, 3403, 4387, 4731, 6099, 8881, 10209, 13161, 26643, 64657, 83353, 168739, 193971, 250059, 364121, 506217, 1092363, 6918299, 20754897]

約数ペア:

[(1, 20754897), (3, 6918299), (19, 1092363), (41, 506217), (57, 364121), (83, 250059), (107, 193971), (123, 168739), (249, 83353), (321, 64657), (779, 26643), (1577, 13161), (2033, 10209), (2337, 8881), (3403, 6099), (4387, 4731)]