20621293

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 27205632

約数和(自身を除く): 6584339

約数列:

[1, 7, 11, 31, 53, 77, 163, 217, 341, 371, 583, 1141, 1643, 1793, 2387, 4081, 5053, 8639, 11501, 12551, 18073, 35371, 55583, 60473, 95029, 126511, 267809, 389081, 665203, 1874663, 2945899, 20621293]

約数ペア:

[(1, 20621293), (7, 2945899), (11, 1874663), (31, 665203), (53, 389081), (77, 267809), (163, 126511), (217, 95029), (341, 60473), (371, 55583), (583, 35371), (1141, 18073), (1643, 12551), (1793, 11501), (2387, 8639), (4081, 5053)]