20792421

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2503}}^1$

素因数の和:2593

約数の個数: 24

約数和(自身を含む): 32812416

約数和(自身を除く): 12019995

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2503, 2769, 7509, 8307, 22527, 32539, 97617, 177713, 292851, 533139, 1599417, 2310269, 6930807, 20792421]

約数ペア:

[(1, 20792421), (3, 6930807), (9, 2310269), (13, 1599417), (39, 533139), (71, 292851), (117, 177713), (213, 97617), (639, 32539), (923, 22527), (2503, 8307), (2769, 7509)]