20025400

素因数分解:

$2^3\times 5^2\times {\mathrm{223}}^1\times {\mathrm{449}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 46872000

約数和(自身を除く): 26846600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 223, 446, 449, 892, 898, 1115, 1784, 1796, 2230, 2245, 3592, 4460, 4490, 5575, 8920, 8980, 11150, 11225, 17960, 22300, 22450, 44600, 44900, 89800, 100127, 200254, 400508, 500635, 801016, 1001270, 2002540, 2503175, 4005080, 5006350, 10012700, 20025400]

約数ペア:

[(1, 20025400), (2, 10012700), (4, 5006350), (5, 4005080), (8, 2503175), (10, 2002540), (20, 1001270), (25, 801016), (40, 500635), (50, 400508), (100, 200254), (200, 100127), (223, 89800), (446, 44900), (449, 44600), (892, 22450), (898, 22300), (1115, 17960), (1784, 11225), (1796, 11150), (2230, 8980), (2245, 8920), (3592, 5575), (4460, 4490)]