20798841

素因数分解:

$3^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{1901}}^1$

素因数の和:2432

約数の個数: 16

約数和(自身を含む): 31771008

約数和(自身を除く): 10972167

約数列:

[1, 3, 7, 21, 521, 1563, 1901, 3647, 5703, 10941, 13307, 39921, 990421, 2971263, 6932947, 20798841]

約数ペア:

[(1, 20798841), (3, 6932947), (7, 2971263), (21, 990421), (521, 39921), (1563, 13307), (1901, 10941), (3647, 5703)]