18516393

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 33280000

約数和(自身を除く): 14763607

約数列:

[1, 3, 7, 9, 19, 21, 31, 57, 63, 93, 133, 171, 217, 279, 399, 499, 589, 651, 1197, 1497, 1767, 1953, 3493, 4123, 4491, 5301, 9481, 10479, 12369, 15469, 28443, 31437, 37107, 46407, 66367, 85329, 108283, 139221, 199101, 293911, 324849, 597303, 881733, 974547, 2057377, 2645199, 6172131, 18516393]

約数ペア:

[(1, 18516393), (3, 6172131), (7, 2645199), (9, 2057377), (19, 974547), (21, 881733), (31, 597303), (57, 324849), (63, 293911), (93, 199101), (133, 139221), (171, 108283), (217, 85329), (279, 66367), (399, 46407), (499, 37107), (589, 31437), (651, 28443), (1197, 15469), (1497, 12369), (1767, 10479), (1953, 9481), (3493, 5301), (4123, 4491)]