11987001

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:143

約数の個数: 48

約数和(自身を含む): 20027520

約数和(自身を除く): 8040519

約数列:

[1, 3, 9, 13, 27, 37, 39, 71, 111, 117, 169, 213, 333, 351, 481, 507, 639, 923, 999, 1443, 1521, 1917, 2627, 2769, 4329, 4563, 6253, 7881, 8307, 11999, 12987, 18759, 23643, 24921, 34151, 35997, 56277, 70929, 102453, 107991, 168831, 307359, 323973, 443963, 922077, 1331889, 3995667, 11987001]

約数ペア:

[(1, 11987001), (3, 3995667), (9, 1331889), (13, 922077), (27, 443963), (37, 323973), (39, 307359), (71, 168831), (111, 107991), (117, 102453), (169, 70929), (213, 56277), (333, 35997), (351, 34151), (481, 24921), (507, 23643), (639, 18759), (923, 12987), (999, 11999), (1443, 8307), (1521, 7881), (1917, 6253), (2627, 4563), (2769, 4329)]