1287200

素因数分解:

$2^5\times 5^2\times {\mathrm{1609}}^1$

素因数の和:1629

約数の個数: 36

約数和(自身を含む): 3144330

約数和(自身を除く): 1857130

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 1609, 3218, 6436, 8045, 12872, 16090, 25744, 32180, 40225, 51488, 64360, 80450, 128720, 160900, 257440, 321800, 643600, 1287200]

約数ペア:

[(1, 1287200), (2, 643600), (4, 321800), (5, 257440), (8, 160900), (10, 128720), (16, 80450), (20, 64360), (25, 51488), (32, 40225), (40, 32180), (50, 25744), (80, 16090), (100, 12872), (160, 8045), (200, 6436), (400, 3218), (800, 1609)]