20980064

素因数分解:

$2^5\times 7^1\times {\mathrm{229}}^1\times {\mathrm{409}}^1$

素因数の和:655

約数の個数: 48

約数和(自身を含む): 47527200

約数和(自身を除く): 26547136

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 229, 409, 458, 818, 916, 1603, 1636, 1832, 2863, 3206, 3272, 3664, 5726, 6412, 6544, 7328, 11452, 12824, 13088, 22904, 25648, 45808, 51296, 91616, 93661, 187322, 374644, 655627, 749288, 1311254, 1498576, 2622508, 2997152, 5245016, 10490032, 20980064]

約数ペア:

[(1, 20980064), (2, 10490032), (4, 5245016), (7, 2997152), (8, 2622508), (14, 1498576), (16, 1311254), (28, 749288), (32, 655627), (56, 374644), (112, 187322), (224, 93661), (229, 91616), (409, 51296), (458, 45808), (818, 25648), (916, 22904), (1603, 13088), (1636, 12824), (1832, 11452), (2863, 7328), (3206, 6544), (3272, 6412), (3664, 5726)]