18337221

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{967}}^1$

素因数の和:1030

約数の個数: 36

約数和(自身を含む): 31560672

約数和(自身を除く): 13223451

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 967, 2107, 2709, 2901, 6321, 6769, 8703, 18963, 20307, 41581, 47383, 60921, 124743, 142149, 291067, 374229, 426447, 873201, 2037469, 2619603, 6112407, 18337221]

約数ペア:

[(1, 18337221), (3, 6112407), (7, 2619603), (9, 2037469), (21, 873201), (43, 426447), (49, 374229), (63, 291067), (129, 142149), (147, 124743), (301, 60921), (387, 47383), (441, 41581), (903, 20307), (967, 18963), (2107, 8703), (2709, 6769), (2901, 6321)]