20265189

素因数分解:

$3^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{2239}}^1$

素因数の和:2680

約数の個数: 16

約数和(自身を含む): 30965760

約数和(自身を除く): 10700571

約数列:

[1, 3, 7, 21, 431, 1293, 2239, 3017, 6717, 9051, 15673, 47019, 965009, 2895027, 6755063, 20265189]

約数ペア:

[(1, 20265189), (3, 6755063), (7, 2895027), (21, 965009), (431, 47019), (1293, 15673), (2239, 9051), (3017, 6717)]