20620779

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{9403}}^1$

素因数の和:9466

約数の個数: 16

約数和(自身を含む): 29791872

約数和(自身を除く): 9171093

約数列:

[1, 3, 17, 43, 51, 129, 731, 2193, 9403, 28209, 159851, 404329, 479553, 1212987, 6873593, 20620779]

約数ペア:

[(1, 20620779), (3, 6873593), (17, 1212987), (43, 479553), (51, 404329), (129, 159851), (731, 28209), (2193, 9403)]