20519317

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{509}}^1$

素因数の和:972

約数の個数: 16

約数和(自身を含む): 25361280

約数和(自身を除く): 4841963

約数列:

[1, 7, 13, 91, 443, 509, 3101, 3563, 5759, 6617, 40313, 46319, 225487, 1578409, 2931331, 20519317]

約数ペア:

[(1, 20519317), (7, 2931331), (13, 1578409), (91, 225487), (443, 46319), (509, 40313), (3101, 6617), (3563, 5759)]