18520173

素因数分解:

$3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4027}}^1$

素因数の和:4113

約数の個数: 24

約数和(自身を含む): 30999488

約数和(自身を除く): 12479315

約数列:

[1, 3, 7, 9, 21, 63, 73, 219, 511, 657, 1533, 4027, 4599, 12081, 28189, 36243, 84567, 253701, 293971, 881913, 2057797, 2645739, 6173391, 18520173]

約数ペア:

[(1, 18520173), (3, 6173391), (7, 2645739), (9, 2057797), (21, 881913), (63, 293971), (73, 253701), (219, 84567), (511, 36243), (657, 28189), (1533, 12081), (4027, 4599)]