20780053567

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{563}}^1\times {\mathrm{405599}}^1$

素因数の和:406182

約数の個数: 16

約数和(自身を含む): 25620940800

約数和(自身を除く): 4840887233

約数列:

[1, 7, 13, 91, 563, 3941, 7319, 51233, 405599, 2839193, 5272787, 36909509, 228352237, 1598465659, 2968579081, 20780053567]

約数ペア:

[(1, 20780053567), (7, 2968579081), (13, 1598465659), (91, 228352237), (563, 36909509), (3941, 5272787), (7319, 2839193), (51233, 405599)]