20487200

素因数分解:

$2^5\times 5^2\times {\mathrm{25609}}^1$

素因数の和:25629

約数の個数: 36

約数和(自身を含む): 50016330

約数和(自身を除く): 29529130

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 25609, 51218, 102436, 128045, 204872, 256090, 409744, 512180, 640225, 819488, 1024360, 1280450, 2048720, 2560900, 4097440, 5121800, 10243600, 20487200]

約数ペア:

[(1, 20487200), (2, 10243600), (4, 5121800), (5, 4097440), (8, 2560900), (10, 2048720), (16, 1280450), (20, 1024360), (25, 819488), (32, 640225), (40, 512180), (50, 409744), (80, 256090), (100, 204872), (160, 128045), (200, 102436), (400, 51218), (800, 25609)]