21281528

素因数分解:

$2^3\times {\mathrm{1231}}^1\times {\mathrm{2161}}^1$

素因数の和:3398

約数の個数: 16

約数和(自身を含む): 39953760

約数和(自身を除く): 18672232

約数列:

[1, 2, 4, 8, 1231, 2161, 2462, 4322, 4924, 8644, 9848, 17288, 2660191, 5320382, 10640764, 21281528]

約数ペア:

[(1, 21281528), (2, 10640764), (4, 5320382), (8, 2660191), (1231, 17288), (2161, 9848), (2462, 8644), (4322, 4924)]