20904961

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{3271}}^1$

素因数の和:3372

約数の個数: 16

約数和(自身を含む): 26385408

約数和(自身を除く): 5480447

約数列:

[1, 7, 11, 77, 83, 581, 913, 3271, 6391, 22897, 35981, 251867, 271493, 1900451, 2986423, 20904961]

約数ペア:

[(1, 20904961), (7, 2986423), (11, 1900451), (77, 271493), (83, 251867), (581, 35981), (913, 22897), (3271, 6391)]