21357490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{27737}}^1$

素因数の和:27762

約数の個数: 32

約数和(自身を含む): 47931264

約数和(自身を除く): 26573774

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 27737, 55474, 138685, 194159, 277370, 305107, 388318, 610214, 970795, 1525535, 1941590, 2135749, 3051070, 4271498, 10678745, 21357490]

約数ペア:

[(1, 21357490), (2, 10678745), (5, 4271498), (7, 3051070), (10, 2135749), (11, 1941590), (14, 1525535), (22, 970795), (35, 610214), (55, 388318), (70, 305107), (77, 277370), (110, 194159), (154, 138685), (385, 55474), (770, 27737)]