20986400

素因数分解:

$2^5\times 5^2\times {\mathrm{37}}^1\times {\mathrm{709}}^1$

素因数の和:766

約数の個数: 72

約数和(自身を含む): 52691940

約数和(自身を除く): 31705540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 37, 40, 50, 74, 80, 100, 148, 160, 185, 200, 296, 370, 400, 592, 709, 740, 800, 925, 1184, 1418, 1480, 1850, 2836, 2960, 3545, 3700, 5672, 5920, 7090, 7400, 11344, 14180, 14800, 17725, 22688, 26233, 28360, 29600, 35450, 52466, 56720, 70900, 104932, 113440, 131165, 141800, 209864, 262330, 283600, 419728, 524660, 567200, 655825, 839456, 1049320, 1311650, 2098640, 2623300, 4197280, 5246600, 10493200, 20986400]

約数ペア:

[(1, 20986400), (2, 10493200), (4, 5246600), (5, 4197280), (8, 2623300), (10, 2098640), (16, 1311650), (20, 1049320), (25, 839456), (32, 655825), (37, 567200), (40, 524660), (50, 419728), (74, 283600), (80, 262330), (100, 209864), (148, 141800), (160, 131165), (185, 113440), (200, 104932), (296, 70900), (370, 56720), (400, 52466), (592, 35450), (709, 29600), (740, 28360), (800, 26233), (925, 22688), (1184, 17725), (1418, 14800), (1480, 14180), (1850, 11344), (2836, 7400), (2960, 7090), (3545, 5920), (3700, 5672)]