20080780

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4201}}^1$

素因数の和:4449

約数の個数: 24

約数和(自身を含む): 42356160

約数和(自身を除く): 22275380

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4201, 4780, 8402, 16804, 21005, 42010, 84020, 1004039, 2008078, 4016156, 5020195, 10040390, 20080780]

約数ペア:

[(1, 20080780), (2, 10040390), (4, 5020195), (5, 4016156), (10, 2008078), (20, 1004039), (239, 84020), (478, 42010), (956, 21005), (1195, 16804), (2390, 8402), (4201, 4780)]