18780201

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1709}}^1$

素因数の和:1766

約数の個数: 32

約数和(自身を含む): 31190400

約数和(自身を除く): 12410199

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 297, 333, 407, 999, 1221, 1709, 3663, 5127, 10989, 15381, 18799, 46143, 56397, 63233, 169191, 189699, 507573, 569097, 695563, 1707291, 2086689, 6260067, 18780201]

約数ペア:

[(1, 18780201), (3, 6260067), (9, 2086689), (11, 1707291), (27, 695563), (33, 569097), (37, 507573), (99, 189699), (111, 169191), (297, 63233), (333, 56397), (407, 46143), (999, 18799), (1221, 15381), (1709, 10989), (3663, 5127)]