18538465

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 7008287

約数列:

[1, 5, 11, 31, 55, 83, 131, 155, 341, 415, 655, 913, 1441, 1705, 2573, 4061, 4565, 7205, 10873, 12865, 20305, 28303, 44671, 54365, 119603, 141515, 223355, 337063, 598015, 1685315, 3707693, 18538465]

約数ペア:

[(1, 18538465), (5, 3707693), (11, 1685315), (31, 598015), (55, 337063), (83, 223355), (131, 141515), (155, 119603), (341, 54365), (415, 44671), (655, 28303), (913, 20305), (1441, 12865), (1705, 10873), (2573, 7205), (4061, 4565)]