207900891

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{18919}}^1$

素因数の和:18976

約数の個数: 32

約数和(自身を含む): 345100800

約数和(自身を除く): 137199909

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 297, 333, 407, 999, 1221, 3663, 10989, 18919, 56757, 170271, 208109, 510813, 624327, 700003, 1872981, 2100009, 5618943, 6300027, 7700033, 18900081, 23100099, 69300297, 207900891]

約数ペア:

[(1, 207900891), (3, 69300297), (9, 23100099), (11, 18900081), (27, 7700033), (33, 6300027), (37, 5618943), (99, 2100009), (111, 1872981), (297, 700003), (333, 624327), (407, 510813), (999, 208109), (1221, 170271), (3663, 56757), (10989, 18919)]