19946367

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 34777600

約数和(自身を除く): 14831233

約数列:

[1, 3, 7, 9, 21, 37, 43, 63, 111, 129, 199, 259, 301, 333, 387, 597, 777, 903, 1393, 1591, 1791, 2331, 2709, 4179, 4773, 7363, 8557, 11137, 12537, 14319, 22089, 25671, 33411, 51541, 59899, 66267, 77013, 100233, 154623, 179697, 316609, 463869, 539091, 949827, 2216263, 2849481, 6648789, 19946367]

約数ペア:

[(1, 19946367), (3, 6648789), (7, 2849481), (9, 2216263), (21, 949827), (37, 539091), (43, 463869), (63, 316609), (111, 179697), (129, 154623), (199, 100233), (259, 77013), (301, 66267), (333, 59899), (387, 51541), (597, 33411), (777, 25671), (903, 22089), (1393, 14319), (1591, 12537), (1791, 11137), (2331, 8557), (2709, 7363), (4179, 4773)]