21553904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70901}}^1$

素因数の和:70928

約数の個数: 20

約数和(自身を含む): 43959240

約数和(自身を除く): 22405336

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70901, 141802, 283604, 567208, 1134416, 1347119, 2694238, 5388476, 10776952, 21553904]

約数ペア:

[(1, 21553904), (2, 10776952), (4, 5388476), (8, 2694238), (16, 1347119), (19, 1134416), (38, 567208), (76, 283604), (152, 141802), (304, 70901)]