18981693

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{857}}^1$

素因数の和:993

約数の個数: 24

約数和(自身を含む): 28911168

約数和(自身を除く): 9929475

約数列:

[1, 3, 9, 23, 69, 107, 207, 321, 857, 963, 2461, 2571, 7383, 7713, 19711, 22149, 59133, 91699, 177399, 275097, 825291, 2109077, 6327231, 18981693]

約数ペア:

[(1, 18981693), (3, 6327231), (9, 2109077), (23, 825291), (69, 275097), (107, 177399), (207, 91699), (321, 59133), (857, 22149), (963, 19711), (2461, 7713), (2571, 7383)]