18478467

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2239}}^1$

素因数の和:2383

約数の個数: 24

約数和(自身を含む): 30750720

約数和(自身を除く): 12272253

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2239, 2751, 6717, 8253, 15673, 20151, 47019, 141057, 293309, 879927, 2053163, 2639781, 6159489, 18478467]

約数ペア:

[(1, 18478467), (3, 6159489), (7, 2639781), (9, 2053163), (21, 879927), (63, 293309), (131, 141057), (393, 47019), (917, 20151), (1179, 15673), (2239, 8253), (2751, 6717)]