815680

素因数分解:

$2^6\times 5^1\times {\mathrm{2549}}^1$

素因数の和:2566

約数の個数: 28

約数和(自身を含む): 1943100

約数和(自身を除く): 1127420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2549, 5098, 10196, 12745, 20392, 25490, 40784, 50980, 81568, 101960, 163136, 203920, 407840, 815680]

約数ペア:

[(1, 815680), (2, 407840), (4, 203920), (5, 163136), (8, 101960), (10, 81568), (16, 50980), (20, 40784), (32, 25490), (40, 20392), (64, 12745), (80, 10196), (160, 5098), (320, 2549)]