21764439

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{211}}^1$

素因数の和:447

約数の個数: 24

約数和(自身を含む): 32223152

約数和(自身を除く): 10458713

約数列:

[1, 3, 9, 73, 157, 211, 219, 471, 633, 657, 1413, 1899, 11461, 15403, 33127, 34383, 46209, 99381, 103149, 138627, 298143, 2418271, 7254813, 21764439]

約数ペア:

[(1, 21764439), (3, 7254813), (9, 2418271), (73, 298143), (157, 138627), (211, 103149), (219, 99381), (471, 46209), (633, 34383), (657, 33127), (1413, 15403), (1899, 11461)]