20512157860

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7486189}}^1$

素因数の和:7486335

約数の個数: 24

約数和(自身を含む): 43389957240

約数和(自身を除く): 22877799380

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7486189, 14972378, 29944756, 37430945, 74861890, 149723780, 1025607893, 2051215786, 4102431572, 5128039465, 10256078930, 20512157860]

約数ペア:

[(1, 20512157860), (2, 10256078930), (4, 5128039465), (5, 4102431572), (10, 2051215786), (20, 1025607893), (137, 149723780), (274, 74861890), (548, 37430945), (685, 29944756), (1370, 14972378), (2740, 7486189)]