51780400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{18493}}^1$

素因数の和:18518

約数の個数: 60

約数和(自身を含む): 142181872

約数和(自身を除く): 90401472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 140, 175, 200, 280, 350, 400, 560, 700, 1400, 2800, 18493, 36986, 73972, 92465, 129451, 147944, 184930, 258902, 295888, 369860, 462325, 517804, 647255, 739720, 924650, 1035608, 1294510, 1479440, 1849300, 2071216, 2589020, 3236275, 3698600, 5178040, 6472550, 7397200, 10356080, 12945100, 25890200, 51780400]

約数ペア:

[(1, 51780400), (2, 25890200), (4, 12945100), (5, 10356080), (7, 7397200), (8, 6472550), (10, 5178040), (14, 3698600), (16, 3236275), (20, 2589020), (25, 2071216), (28, 1849300), (35, 1479440), (40, 1294510), (50, 1035608), (56, 924650), (70, 739720), (80, 647255), (100, 517804), (112, 462325), (140, 369860), (175, 295888), (200, 258902), (280, 184930), (350, 147944), (400, 129451), (560, 92465), (700, 73972), (1400, 36986), (2800, 18493)]