18007137

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{271}}^1$

素因数の和:410

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 10193823

約数列:

[1, 3, 9, 23, 27, 69, 107, 207, 271, 321, 621, 813, 963, 2439, 2461, 2889, 6233, 7317, 7383, 18699, 22149, 28997, 56097, 66447, 86991, 168291, 260973, 666931, 782919, 2000793, 6002379, 18007137]

約数ペア:

[(1, 18007137), (3, 6002379), (9, 2000793), (23, 782919), (27, 666931), (69, 260973), (107, 168291), (207, 86991), (271, 66447), (321, 56097), (621, 28997), (813, 22149), (963, 18699), (2439, 7383), (2461, 7317), (2889, 6233)]