21097904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69401}}^1$

素因数の和:69428

約数の個数: 20

約数和(自身を含む): 43029240

約数和(自身を除く): 21931336

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69401, 138802, 277604, 555208, 1110416, 1318619, 2637238, 5274476, 10548952, 21097904]

約数ペア:

[(1, 21097904), (2, 10548952), (4, 5274476), (8, 2637238), (16, 1318619), (19, 1110416), (38, 555208), (76, 277604), (152, 138802), (304, 69401)]