21745808

素因数分解:

$2^4\times 7^2\times {\mathrm{27737}}^1$

素因数の和:27759

約数の個数: 30

約数和(自身を含む): 49013046

約数和(自身を除く): 27267238

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 27737, 55474, 110948, 194159, 221896, 388318, 443792, 776636, 1359113, 1553272, 2718226, 3106544, 5436452, 10872904, 21745808]

約数ペア:

[(1, 21745808), (2, 10872904), (4, 5436452), (7, 3106544), (8, 2718226), (14, 1553272), (16, 1359113), (28, 776636), (49, 443792), (56, 388318), (98, 221896), (112, 194159), (196, 110948), (392, 55474), (784, 27737)]