20728881

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1847}}^1$

素因数の和:1925

約数の個数: 24

約数和(自身を含む): 31711680

約数和(自身を除く): 10982799

約数列:

[1, 3, 9, 29, 43, 87, 129, 261, 387, 1247, 1847, 3741, 5541, 11223, 16623, 53563, 79421, 160689, 238263, 482067, 714789, 2303209, 6909627, 20728881]

約数ペア:

[(1, 20728881), (3, 6909627), (9, 2303209), (29, 714789), (43, 482067), (87, 238263), (129, 160689), (261, 79421), (387, 53563), (1247, 16623), (1847, 11223), (3741, 5541)]