987047999

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{397}}^1\times {\mathrm{1229}}^1$

素因数の和:1667

約数の個数: 24

約数和(自身を含む): 1202310240

約数和(自身を除く): 215262241

約数列:

[1, 7, 17, 119, 289, 397, 1229, 2023, 2779, 6749, 8603, 20893, 47243, 114733, 146251, 355181, 487913, 803131, 2486267, 3415391, 8294521, 58061647, 141006857, 987047999]

約数ペア:

[(1, 987047999), (7, 141006857), (17, 58061647), (119, 8294521), (289, 3415391), (397, 2486267), (1229, 803131), (2023, 487913), (2779, 355181), (6749, 146251), (8603, 114733), (20893, 47243)]