981688491

素因数分解:

$3^4\times 7^2\times {\mathrm{247339}}^1$

素因数の和:247365

約数の個数: 30

約数和(自身を含む): 1705903980

約数和(自身を除く): 724215489

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 247339, 742017, 1731373, 2226051, 5194119, 6678153, 12119611, 15582357, 20034459, 36358833, 46747071, 109076499, 140241213, 327229497, 981688491]

約数ペア:

[(1, 981688491), (3, 327229497), (7, 140241213), (9, 109076499), (21, 46747071), (27, 36358833), (49, 20034459), (63, 15582357), (81, 12119611), (147, 6678153), (189, 5194119), (441, 2226051), (567, 1731373), (1323, 742017), (3969, 247339)]