21648272

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12413}}^1$

素因数の和:12530

約数の個数: 20

約数和(自身を含む): 42331740

約数和(自身を除く): 20683468

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12413, 24826, 49652, 99304, 198608, 1353017, 2706034, 5412068, 10824136, 21648272]

約数ペア:

[(1, 21648272), (2, 10824136), (4, 5412068), (8, 2706034), (16, 1353017), (109, 198608), (218, 99304), (436, 49652), (872, 24826), (1744, 12413)]