20319789

素因数分解:

$3^1\times 7^1\times {\mathrm{509}}^1\times {\mathrm{1901}}^1$

素因数の和:2420

約数の個数: 16

約数和(自身を含む): 31040640

約数和(自身を除く): 10720851

約数列:

[1, 3, 7, 21, 509, 1527, 1901, 3563, 5703, 10689, 13307, 39921, 967609, 2902827, 6773263, 20319789]

約数ペア:

[(1, 20319789), (3, 6773263), (7, 2902827), (21, 967609), (509, 39921), (1527, 13307), (1901, 10689), (3563, 5703)]