20280141

素因数分解:

$3^2\times 7^1\times {\mathrm{487}}^1\times {\mathrm{661}}^1$

素因数の和:1161

約数の個数: 24

約数和(自身を含む): 33597824

約数和(自身を除く): 13317683

約数列:

[1, 3, 7, 9, 21, 63, 487, 661, 1461, 1983, 3409, 4383, 4627, 5949, 10227, 13881, 30681, 41643, 321907, 965721, 2253349, 2897163, 6760047, 20280141]

約数ペア:

[(1, 20280141), (3, 6760047), (7, 2897163), (9, 2253349), (21, 965721), (63, 321907), (487, 41643), (661, 30681), (1461, 13881), (1983, 10227), (3409, 5949), (4383, 4627)]