28320165

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 54163200

約数和(自身を除く): 25843035

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 61, 95, 135, 171, 181, 183, 285, 305, 513, 543, 549, 855, 905, 915, 1159, 1629, 1647, 2565, 2715, 2745, 3439, 3477, 4887, 5795, 8145, 8235, 10317, 10431, 11041, 17195, 17385, 24435, 30951, 31293, 33123, 51585, 52155, 55205, 92853, 99369, 154755, 156465, 165615, 209779, 298107, 464265, 496845, 629337, 1048895, 1490535, 1888011, 3146685, 5664033, 9440055, 28320165]

約数ペア:

[(1, 28320165), (3, 9440055), (5, 5664033), (9, 3146685), (15, 1888011), (19, 1490535), (27, 1048895), (45, 629337), (57, 496845), (61, 464265), (95, 298107), (135, 209779), (171, 165615), (181, 156465), (183, 154755), (285, 99369), (305, 92853), (513, 55205), (543, 52155), (549, 51585), (855, 33123), (905, 31293), (915, 30951), (1159, 24435), (1629, 17385), (1647, 17195), (2565, 11041), (2715, 10431), (2745, 10317), (3439, 8235), (3477, 8145), (4887, 5795)]