21004874

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:167

約数の個数: 48

約数和(自身を含む): 37202760

約数和(自身を除く): 16197886

約数列:

[1, 2, 11, 22, 29, 41, 58, 73, 82, 121, 146, 242, 319, 451, 638, 803, 902, 1189, 1606, 2117, 2378, 2993, 3509, 4234, 4961, 5986, 7018, 8833, 9922, 13079, 17666, 23287, 26158, 32923, 46574, 65846, 86797, 143869, 173594, 256157, 287738, 362153, 512314, 724306, 954767, 1909534, 10502437, 21004874]

約数ペア:

[(1, 21004874), (2, 10502437), (11, 1909534), (22, 954767), (29, 724306), (41, 512314), (58, 362153), (73, 287738), (82, 256157), (121, 173594), (146, 143869), (242, 86797), (319, 65846), (451, 46574), (638, 32923), (803, 26158), (902, 23287), (1189, 17666), (1606, 13079), (2117, 9922), (2378, 8833), (2993, 7018), (3509, 5986), (4234, 4961)]