20899389

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13633}}^1$

素因数の和:13716

約数の個数: 16

約数和(自身を含む): 32285312

約数和(自身を除く): 11385923

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13633, 40899, 95431, 286293, 995209, 2985627, 6966463, 20899389]

約数ペア:

[(1, 20899389), (3, 6966463), (7, 2985627), (21, 995209), (73, 286293), (219, 95431), (511, 40899), (1533, 13633)]