21555439

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1901}}^1$

素因数の和:1970

約数の個数: 16

約数和(自身を含む): 24649920

約数和(自身を除く): 3094481

約数列:

[1, 17, 23, 29, 391, 493, 667, 1901, 11339, 32317, 43723, 55129, 743291, 937193, 1267967, 21555439]

約数ペア:

[(1, 21555439), (17, 1267967), (23, 937193), (29, 743291), (391, 55129), (493, 43723), (667, 32317), (1901, 11339)]