20858121

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{20879}}^1$

素因数の和:20925

約数の個数: 16

約数和(自身を含む): 31737600

約数和(自身を除く): 10879479

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 20879, 62637, 187911, 563733, 772523, 2317569, 6952707, 20858121]

約数ペア:

[(1, 20858121), (3, 6952707), (9, 2317569), (27, 772523), (37, 563733), (111, 187911), (333, 62637), (999, 20879)]