20392000

素因数分解:

$2^6\times 5^3\times {\mathrm{2549}}^1$

素因数の和:2576

約数の個数: 56

約数和(自身を含む): 50520600

約数和(自身を除く): 30128600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1600, 2000, 2549, 4000, 5098, 8000, 10196, 12745, 20392, 25490, 40784, 50980, 63725, 81568, 101960, 127450, 163136, 203920, 254900, 318625, 407840, 509800, 637250, 815680, 1019600, 1274500, 2039200, 2549000, 4078400, 5098000, 10196000, 20392000]

約数ペア:

[(1, 20392000), (2, 10196000), (4, 5098000), (5, 4078400), (8, 2549000), (10, 2039200), (16, 1274500), (20, 1019600), (25, 815680), (32, 637250), (40, 509800), (50, 407840), (64, 318625), (80, 254900), (100, 203920), (125, 163136), (160, 127450), (200, 101960), (250, 81568), (320, 63725), (400, 50980), (500, 40784), (800, 25490), (1000, 20392), (1600, 12745), (2000, 10196), (2549, 8000), (4000, 5098)]