20689485

素因数分解:

$3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{10529}}^1$

素因数の和:10668

約数の個数: 16

約数和(自身を含む): 33359040

約数和(自身を除く): 12669555

約数列:

[1, 3, 5, 15, 131, 393, 655, 1965, 10529, 31587, 52645, 157935, 1379299, 4137897, 6896495, 20689485]

約数ペア:

[(1, 20689485), (3, 6896495), (5, 4137897), (15, 1379299), (131, 157935), (393, 52645), (655, 31587), (1965, 10529)]