19983987

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{3329}}^1$

素因数の和:3387

約数の個数: 24

約数和(自身を含む): 31168800

約数和(自身を除く): 11184813

約数列:

[1, 3, 9, 23, 29, 69, 87, 207, 261, 667, 2001, 3329, 6003, 9987, 29961, 76567, 96541, 229701, 289623, 689103, 868869, 2220443, 6661329, 19983987]

約数ペア:

[(1, 19983987), (3, 6661329), (9, 2220443), (23, 868869), (29, 689103), (69, 289623), (87, 229701), (207, 96541), (261, 76567), (667, 29961), (2001, 9987), (3329, 6003)]