21118400

素因数分解:

$2^6\times 5^2\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:286

約数の個数: 84

約数和(自身を含む): 53007768

約数和(自身を除く): 31889368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 67, 80, 100, 134, 160, 197, 200, 268, 320, 335, 394, 400, 536, 670, 788, 800, 985, 1072, 1340, 1576, 1600, 1675, 1970, 2144, 2680, 3152, 3350, 3940, 4288, 4925, 5360, 6304, 6700, 7880, 9850, 10720, 12608, 13199, 13400, 15760, 19700, 21440, 26398, 26800, 31520, 39400, 52796, 53600, 63040, 65995, 78800, 105592, 107200, 131990, 157600, 211184, 263980, 315200, 329975, 422368, 527960, 659950, 844736, 1055920, 1319900, 2111840, 2639800, 4223680, 5279600, 10559200, 21118400]

約数ペア:

[(1, 21118400), (2, 10559200), (4, 5279600), (5, 4223680), (8, 2639800), (10, 2111840), (16, 1319900), (20, 1055920), (25, 844736), (32, 659950), (40, 527960), (50, 422368), (64, 329975), (67, 315200), (80, 263980), (100, 211184), (134, 157600), (160, 131990), (197, 107200), (200, 105592), (268, 78800), (320, 65995), (335, 63040), (394, 53600), (400, 52796), (536, 39400), (670, 31520), (788, 26800), (800, 26398), (985, 21440), (1072, 19700), (1340, 15760), (1576, 13400), (1600, 13199), (1675, 12608), (1970, 10720), (2144, 9850), (2680, 7880), (3152, 6700), (3350, 6304), (3940, 5360), (4288, 4925)]