21462200

素因数分解:

$2^3\times 5^2\times {\mathrm{239}}^1\times {\mathrm{449}}^1$

素因数の和:704

約数の個数: 48

約数和(自身を含む): 50220000

約数和(自身を除く): 28757800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 239, 449, 478, 898, 956, 1195, 1796, 1912, 2245, 2390, 3592, 4490, 4780, 5975, 8980, 9560, 11225, 11950, 17960, 22450, 23900, 44900, 47800, 89800, 107311, 214622, 429244, 536555, 858488, 1073110, 2146220, 2682775, 4292440, 5365550, 10731100, 21462200]

約数ペア:

[(1, 21462200), (2, 10731100), (4, 5365550), (5, 4292440), (8, 2682775), (10, 2146220), (20, 1073110), (25, 858488), (40, 536555), (50, 429244), (100, 214622), (200, 107311), (239, 89800), (449, 47800), (478, 44900), (898, 23900), (956, 22450), (1195, 17960), (1796, 11950), (1912, 11225), (2245, 9560), (2390, 8980), (3592, 5975), (4490, 4780)]