20851578

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1987}}^1$

素因数の和:2059

約数の個数: 48

約数和(自身を含む): 50240736

約数和(自身を除く): 29389158

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 53, 66, 99, 106, 159, 198, 318, 477, 583, 954, 1166, 1749, 1987, 3498, 3974, 5247, 5961, 10494, 11922, 17883, 21857, 35766, 43714, 65571, 105311, 131142, 196713, 210622, 315933, 393426, 631866, 947799, 1158421, 1895598, 2316842, 3475263, 6950526, 10425789, 20851578]

約数ペア:

[(1, 20851578), (2, 10425789), (3, 6950526), (6, 3475263), (9, 2316842), (11, 1895598), (18, 1158421), (22, 947799), (33, 631866), (53, 393426), (66, 315933), (99, 210622), (106, 196713), (159, 131142), (198, 105311), (318, 65571), (477, 43714), (583, 35766), (954, 21857), (1166, 17883), (1749, 11922), (1987, 10494), (3498, 5961), (3974, 5247)]