21157648

素因数分解:

$2^4\times {\mathrm{1069}}^1\times {\mathrm{1237}}^1$

素因数の和:2314

約数の個数: 20

約数和(自身を含む): 41064460

約数和(自身を除く): 19906812

約数列:

[1, 2, 4, 8, 16, 1069, 1237, 2138, 2474, 4276, 4948, 8552, 9896, 17104, 19792, 1322353, 2644706, 5289412, 10578824, 21157648]

約数ペア:

[(1, 21157648), (2, 10578824), (4, 5289412), (8, 2644706), (16, 1322353), (1069, 19792), (1237, 17104), (2138, 9896), (2474, 8552), (4276, 4948)]