28250721

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{28279}}^1$

素因数の和:28325

約数の個数: 16

約数和(自身を含む): 42985600

約数和(自身を除く): 14734879

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 28279, 84837, 254511, 763533, 1046323, 3138969, 9416907, 28250721]

約数ペア:

[(1, 28250721), (3, 9416907), (9, 3138969), (27, 1046323), (37, 763533), (111, 254511), (333, 84837), (999, 28279)]