21339376

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10181}}^1$

素因数の和:10320

約数の個数: 20

約数和(自身を含む): 41664744

約数和(自身を除く): 20325368

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10181, 20362, 40724, 81448, 162896, 1333711, 2667422, 5334844, 10669688, 21339376]

約数ペア:

[(1, 21339376), (2, 10669688), (4, 5334844), (8, 2667422), (16, 1333711), (131, 162896), (262, 81448), (524, 40724), (1048, 20362), (2096, 10181)]