18006471

素因数分解:

$3^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{307}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 32032000

約数和(自身を除く): 14025529

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 307, 343, 399, 441, 921, 931, 1029, 1197, 2149, 2763, 2793, 3087, 5833, 6447, 6517, 8379, 15043, 17499, 19341, 19551, 40831, 45129, 52497, 58653, 105301, 122493, 135387, 285817, 315903, 367479, 857451, 947709, 2000719, 2572353, 6002157, 18006471]

約数ペア:

[(1, 18006471), (3, 6002157), (7, 2572353), (9, 2000719), (19, 947709), (21, 857451), (49, 367479), (57, 315903), (63, 285817), (133, 135387), (147, 122493), (171, 105301), (307, 58653), (343, 52497), (399, 45129), (441, 40831), (921, 19551), (931, 19341), (1029, 17499), (1197, 15043), (2149, 8379), (2763, 6517), (2793, 6447), (3087, 5833)]