20869851

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1\times {\mathrm{643}}^1$

素因数の和:1026

約数の個数: 16

約数和(自身を含む): 28851200

約数和(自身を除く): 7981349

約数列:

[1, 3, 31, 93, 349, 643, 1047, 1929, 10819, 19933, 32457, 59799, 224407, 673221, 6956617, 20869851]

約数ペア:

[(1, 20869851), (3, 6956617), (31, 673221), (93, 224407), (349, 59799), (643, 32457), (1047, 19933), (1929, 10819)]