1991567305

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{11549}}^1$

素因数の和:11953

約数の個数: 32

約数和(自身を含む): 2949408000

約数和(自身を除く): 957840695

約数列:

[1, 5, 7, 13, 35, 65, 91, 379, 455, 1895, 2653, 4927, 11549, 13265, 24635, 34489, 57745, 80843, 150137, 172445, 404215, 750685, 1050959, 4377071, 5254795, 21885355, 30639497, 56901923, 153197485, 284509615, 398313461, 1991567305]

約数ペア:

[(1, 1991567305), (5, 398313461), (7, 284509615), (13, 153197485), (35, 56901923), (65, 30639497), (91, 21885355), (379, 5254795), (455, 4377071), (1895, 1050959), (2653, 750685), (4927, 404215), (11549, 172445), (13265, 150137), (24635, 80843), (34489, 57745)]