81948800

素因数分解:

$2^7\times 5^2\times {\mathrm{25609}}^1$

素因数の和:25633

約数の個数: 48

約数和(自身を含む): 202447050

約数和(自身を除く): 120498250

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 25609, 51218, 102436, 128045, 204872, 256090, 409744, 512180, 640225, 819488, 1024360, 1280450, 1638976, 2048720, 2560900, 3277952, 4097440, 5121800, 8194880, 10243600, 16389760, 20487200, 40974400, 81948800]

約数ペア:

[(1, 81948800), (2, 40974400), (4, 20487200), (5, 16389760), (8, 10243600), (10, 8194880), (16, 5121800), (20, 4097440), (25, 3277952), (32, 2560900), (40, 2048720), (50, 1638976), (64, 1280450), (80, 1024360), (100, 819488), (128, 640225), (160, 512180), (200, 409744), (320, 256090), (400, 204872), (640, 128045), (800, 102436), (1600, 51218), (3200, 25609)]