20078523

素因数分解:

$3^4\times {\mathrm{487}}^1\times {\mathrm{509}}^1$

素因数の和:1008

約数の個数: 20

約数和(自身を含む): 30114480

約数和(自身を除く): 10035957

約数列:

[1, 3, 9, 27, 81, 487, 509, 1461, 1527, 4383, 4581, 13149, 13743, 39447, 41229, 247883, 743649, 2230947, 6692841, 20078523]

約数ペア:

[(1, 20078523), (3, 6692841), (9, 2230947), (27, 743649), (81, 247883), (487, 41229), (509, 39447), (1461, 13743), (1527, 13149), (4383, 4581)]