20138781

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{9743}}^1$

素因数の和:9812

約数の個数: 16

約数和(自身を含む): 29465856

約数和(自身を除く): 9327075

約数列:

[1, 3, 13, 39, 53, 159, 689, 2067, 9743, 29229, 126659, 379977, 516379, 1549137, 6712927, 20138781]

約数ペア:

[(1, 20138781), (3, 6712927), (13, 1549137), (39, 516379), (53, 379977), (159, 126659), (689, 29229), (2067, 9743)]