20518624

素因数分解:

$2^5\times 7^1\times {\mathrm{139}}^1\times {\mathrm{659}}^1$

素因数の和:815

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 26050976

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 139, 224, 278, 556, 659, 973, 1112, 1318, 1946, 2224, 2636, 3892, 4448, 4613, 5272, 7784, 9226, 10544, 15568, 18452, 21088, 31136, 36904, 73808, 91601, 147616, 183202, 366404, 641207, 732808, 1282414, 1465616, 2564828, 2931232, 5129656, 10259312, 20518624]

約数ペア:

[(1, 20518624), (2, 10259312), (4, 5129656), (7, 2931232), (8, 2564828), (14, 1465616), (16, 1282414), (28, 732808), (32, 641207), (56, 366404), (112, 183202), (139, 147616), (224, 91601), (278, 73808), (556, 36904), (659, 31136), (973, 21088), (1112, 18452), (1318, 15568), (1946, 10544), (2224, 9226), (2636, 7784), (3892, 5272), (4448, 4613)]