51471

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:75

約数の個数: 24

約数和(自身を含む): 91520

約数和(自身を除く): 40049

約数列:

[1, 3, 7, 9, 19, 21, 43, 57, 63, 129, 133, 171, 301, 387, 399, 817, 903, 1197, 2451, 2709, 5719, 7353, 17157, 51471]

約数ペア:

[(1, 51471), (3, 17157), (7, 7353), (9, 5719), (19, 2709), (21, 2451), (43, 1197), (57, 903), (63, 817), (129, 399), (133, 387), (171, 301)]