18667719

素因数分解:

$3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2297}}^1$

素因数の和:2356

約数の個数: 32

約数和(自身を含む): 32355840

約数和(自身を除く): 13688121

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2297, 2709, 6891, 8127, 16079, 20673, 48237, 62019, 98771, 144711, 296313, 434133, 691397, 888939, 2074191, 2666817, 6222573, 18667719]

約数ペア:

[(1, 18667719), (3, 6222573), (7, 2666817), (9, 2074191), (21, 888939), (27, 691397), (43, 434133), (63, 296313), (129, 144711), (189, 98771), (301, 62019), (387, 48237), (903, 20673), (1161, 16079), (2297, 8127), (2709, 6891)]