20178859568

素因数分解:

$2^4\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1652921}}^1$

素因数の和:1653045

約数の個数: 40

約数和(自身を含む): 45091712160

約数和(自身を除く): 24912852592

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 109, 112, 218, 436, 763, 872, 1526, 1744, 3052, 6104, 12208, 1652921, 3305842, 6611684, 11570447, 13223368, 23140894, 26446736, 46281788, 92563576, 180168389, 185127152, 360336778, 720673556, 1261178723, 1441347112, 2522357446, 2882694224, 5044714892, 10089429784, 20178859568]

約数ペア:

[(1, 20178859568), (2, 10089429784), (4, 5044714892), (7, 2882694224), (8, 2522357446), (14, 1441347112), (16, 1261178723), (28, 720673556), (56, 360336778), (109, 185127152), (112, 180168389), (218, 92563576), (436, 46281788), (763, 26446736), (872, 23140894), (1526, 13223368), (1744, 11570447), (3052, 6611684), (6104, 3305842), (12208, 1652921)]