18783009

素因数分解:

$3^4\times 7^1\times {\mathrm{157}}^1\times {\mathrm{211}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 32424128

約数和(自身を除く): 13641119

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 157, 189, 211, 471, 567, 633, 1099, 1413, 1477, 1899, 3297, 4239, 4431, 5697, 9891, 12717, 13293, 17091, 29673, 33127, 39879, 89019, 99381, 119637, 231889, 298143, 695667, 894429, 2087001, 2683287, 6261003, 18783009]

約数ペア:

[(1, 18783009), (3, 6261003), (7, 2683287), (9, 2087001), (21, 894429), (27, 695667), (63, 298143), (81, 231889), (157, 119637), (189, 99381), (211, 89019), (471, 39879), (567, 33127), (633, 29673), (1099, 17091), (1413, 13293), (1477, 12717), (1899, 9891), (3297, 5697), (4239, 4431)]