20565799779

素因数分解:

$3^1\times 7^1\times {\mathrm{2459}}^1\times {\mathrm{398261}}^1$

素因数の和:400730

約数の個数: 16

約数和(自身を含む): 31351184640

約数和(自身を除く): 10785384861

約数列:

[1, 3, 7, 21, 2459, 7377, 17213, 51639, 398261, 1194783, 2787827, 8363481, 979323799, 2937971397, 6855266593, 20565799779]

約数ペア:

[(1, 20565799779), (3, 6855266593), (7, 2937971397), (21, 979323799), (2459, 8363481), (7377, 2787827), (17213, 1194783), (51639, 398261)]