20470808

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 39690000

約数和(自身を除く): 19219192

約数列:

[1, 2, 4, 8, 41, 82, 139, 164, 278, 328, 449, 556, 898, 1112, 1796, 3592, 5699, 11398, 18409, 22796, 36818, 45592, 62411, 73636, 124822, 147272, 249644, 499288, 2558851, 5117702, 10235404, 20470808]

約数ペア:

[(1, 20470808), (2, 10235404), (4, 5117702), (8, 2558851), (41, 499288), (82, 249644), (139, 147272), (164, 124822), (278, 73636), (328, 62411), (449, 45592), (556, 36818), (898, 22796), (1112, 18409), (1796, 11398), (3592, 5699)]