18996459

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 27869184

約数和(自身を除く): 8872725

約数列:

[1, 3, 23, 31, 69, 83, 93, 107, 249, 321, 713, 1909, 2139, 2461, 2573, 3317, 5727, 7383, 7719, 8881, 9951, 26643, 59179, 76291, 177537, 204263, 228873, 275311, 612789, 825933, 6332153, 18996459]

約数ペア:

[(1, 18996459), (3, 6332153), (23, 825933), (31, 612789), (69, 275311), (83, 228873), (93, 204263), (107, 177537), (249, 76291), (321, 59179), (713, 26643), (1909, 9951), (2139, 8881), (2461, 7719), (2573, 7383), (3317, 5727)]