20917366857

素因数分解:

$3^8\times {\mathrm{787}}^1\times {\mathrm{4051}}^1$

素因数の和:4862

約数の個数: 36

約数和(自身を含む): 31422076816

約数和(自身を除く): 10504709959

約数列:

[1, 3, 9, 27, 81, 243, 729, 787, 2187, 2361, 4051, 6561, 7083, 12153, 21249, 36459, 63747, 109377, 191241, 328131, 573723, 984393, 1721169, 2953179, 3188137, 5163507, 8859537, 9564411, 26578611, 28693233, 86079699, 258239097, 774717291, 2324151873, 6972455619, 20917366857]

約数ペア:

[(1, 20917366857), (3, 6972455619), (9, 2324151873), (27, 774717291), (81, 258239097), (243, 86079699), (729, 28693233), (787, 26578611), (2187, 9564411), (2361, 8859537), (4051, 5163507), (6561, 3188137), (7083, 2953179), (12153, 1721169), (21249, 984393), (36459, 573723), (63747, 328131), (109377, 191241)]