2561521520

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{132859}}^1$

素因数の和:133113

約数の個数: 40

約数和(自身を含む): 5980294320

約数和(自身を除く): 3418772800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1205, 1928, 2410, 3856, 4820, 9640, 19280, 132859, 265718, 531436, 664295, 1062872, 1328590, 2125744, 2657180, 5314360, 10628720, 32019019, 64038038, 128076076, 160095095, 256152152, 320190190, 512304304, 640380380, 1280760760, 2561521520]

約数ペア:

[(1, 2561521520), (2, 1280760760), (4, 640380380), (5, 512304304), (8, 320190190), (10, 256152152), (16, 160095095), (20, 128076076), (40, 64038038), (80, 32019019), (241, 10628720), (482, 5314360), (964, 2657180), (1205, 2125744), (1928, 1328590), (2410, 1062872), (3856, 664295), (4820, 531436), (9640, 265718), (19280, 132859)]