20471949

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{6301}}^1$

素因数の和:6345

約数の個数: 18

約数和(自身を含む): 31213806

約数和(自身を除く): 10741857

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 6301, 18903, 56709, 119719, 359157, 1077471, 2274661, 6823983, 20471949]

約数ペア:

[(1, 20471949), (3, 6823983), (9, 2274661), (19, 1077471), (57, 359157), (171, 119719), (361, 56709), (1083, 18903), (3249, 6301)]