20549800

素因数分解:

$2^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{2777}}^1$

素因数の和:2830

約数の個数: 48

約数和(自身を含む): 49087260

約数和(自身を除く): 28537460

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 100, 148, 185, 200, 296, 370, 740, 925, 1480, 1850, 2777, 3700, 5554, 7400, 11108, 13885, 22216, 27770, 55540, 69425, 102749, 111080, 138850, 205498, 277700, 410996, 513745, 555400, 821992, 1027490, 2054980, 2568725, 4109960, 5137450, 10274900, 20549800]

約数ペア:

[(1, 20549800), (2, 10274900), (4, 5137450), (5, 4109960), (8, 2568725), (10, 2054980), (20, 1027490), (25, 821992), (37, 555400), (40, 513745), (50, 410996), (74, 277700), (100, 205498), (148, 138850), (185, 111080), (200, 102749), (296, 69425), (370, 55540), (740, 27770), (925, 22216), (1480, 13885), (1850, 11108), (2777, 7400), (3700, 5554)]