20912067

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:241

約数の個数: 48

約数和(自身を含む): 35175840

約数和(自身を除く): 14263773

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 121, 173, 297, 333, 363, 407, 519, 999, 1089, 1221, 1557, 1903, 3267, 3663, 4477, 4671, 5709, 6401, 10989, 13431, 17127, 19203, 20933, 40293, 51381, 57609, 62799, 70411, 120879, 172827, 188397, 211233, 565191, 633699, 774521, 1901097, 2323563, 6970689, 20912067]

約数ペア:

[(1, 20912067), (3, 6970689), (9, 2323563), (11, 1901097), (27, 774521), (33, 633699), (37, 565191), (99, 211233), (111, 188397), (121, 172827), (173, 120879), (297, 70411), (333, 62799), (363, 57609), (407, 51381), (519, 40293), (999, 20933), (1089, 19203), (1221, 17127), (1557, 13431), (1903, 10989), (3267, 6401), (3663, 5709), (4477, 4671)]