19957816

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{857}}^1$

素因数の和:975

約数の個数: 32

約数和(自身を含む): 38918880

約数和(自身を除く): 18961064

約数列:

[1, 2, 4, 8, 41, 71, 82, 142, 164, 284, 328, 568, 857, 1714, 2911, 3428, 5822, 6856, 11644, 23288, 35137, 60847, 70274, 121694, 140548, 243388, 281096, 486776, 2494727, 4989454, 9978908, 19957816]

約数ペア:

[(1, 19957816), (2, 9978908), (4, 4989454), (8, 2494727), (41, 486776), (71, 281096), (82, 243388), (142, 140548), (164, 121694), (284, 70274), (328, 60847), (568, 35137), (857, 23288), (1714, 11644), (2911, 6856), (3428, 5822)]