21241264

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{120689}}^1$

素因数の和:120708

約数の個数: 20

約数和(自身を含む): 44896680

約数和(自身を除く): 23655416

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 120689, 241378, 482756, 965512, 1327579, 1931024, 2655158, 5310316, 10620632, 21241264]

約数ペア:

[(1, 21241264), (2, 10620632), (4, 5310316), (8, 2655158), (11, 1931024), (16, 1327579), (22, 965512), (44, 482756), (88, 241378), (176, 120689)]