20420451

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{2617}}^1$

素因数の和:2660

約数の個数: 24

約数和(自身を含む): 32149040

約数和(自身を除く): 11728589

約数列:

[1, 3, 9, 17, 27, 51, 153, 289, 459, 867, 2601, 2617, 7803, 7851, 23553, 44489, 70659, 133467, 400401, 756313, 1201203, 2268939, 6806817, 20420451]

約数ペア:

[(1, 20420451), (3, 6806817), (9, 2268939), (17, 1201203), (27, 756313), (51, 400401), (153, 133467), (289, 70659), (459, 44489), (867, 23553), (2601, 7851), (2617, 7803)]