20486979

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{10687}}^1$

素因数の和:10767

約数の個数: 16

約数和(自身を含む): 30781440

約数和(自身を除く): 10294461

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 10687, 32061, 96183, 288549, 758777, 2276331, 6828993, 20486979]

約数ペア:

[(1, 20486979), (3, 6828993), (9, 2276331), (27, 758777), (71, 288549), (213, 96183), (639, 32061), (1917, 10687)]