278380881

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{547}}^1$

素因数の和:723

約数の個数: 40

約数和(自身を含む): 427553984

約数和(自身を除く): 149173103

約数列:

[1, 3, 9, 27, 61, 81, 103, 183, 309, 547, 549, 927, 1641, 1647, 2781, 4923, 4941, 6283, 8343, 14769, 18849, 33367, 44307, 56341, 56547, 100101, 169023, 169641, 300303, 507069, 508923, 900909, 1521207, 2702727, 3436801, 4563621, 10310403, 30931209, 92793627, 278380881]

約数ペア:

[(1, 278380881), (3, 92793627), (9, 30931209), (27, 10310403), (61, 4563621), (81, 3436801), (103, 2702727), (183, 1521207), (309, 900909), (547, 508923), (549, 507069), (927, 300303), (1641, 169641), (1647, 169023), (2781, 100101), (4923, 56547), (4941, 56341), (6283, 44307), (8343, 33367), (14769, 18849)]