28521909

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3533}}^1$

素因数の和:3578

約数の個数: 32

約数和(自身を含む): 47496960

約数和(自身を除く): 18975051

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 117, 207, 299, 351, 621, 897, 2691, 3533, 8073, 10599, 31797, 45929, 81259, 95391, 137787, 243777, 413361, 731331, 1056367, 1240083, 2193993, 3169101, 9507303, 28521909]

約数ペア:

[(1, 28521909), (3, 9507303), (9, 3169101), (13, 2193993), (23, 1240083), (27, 1056367), (39, 731331), (69, 413361), (117, 243777), (207, 137787), (299, 95391), (351, 81259), (621, 45929), (897, 31797), (2691, 10599), (3533, 8073)]