16620489

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{641}}^1$

素因数の和:757

約数の個数: 24

約数和(自身を含む): 24971232

約数和(自身を除く): 8350743

約数列:

[1, 3, 9, 43, 67, 129, 201, 387, 603, 641, 1923, 2881, 5769, 8643, 25929, 27563, 42947, 82689, 128841, 248067, 386523, 1846721, 5540163, 16620489]

約数ペア:

[(1, 16620489), (3, 5540163), (9, 1846721), (43, 386523), (67, 248067), (129, 128841), (201, 82689), (387, 42947), (603, 27563), (641, 25929), (1923, 8643), (2881, 5769)]