21046400

素因数分解:

$2^7\times 5^2\times {\mathrm{6577}}^1$

素因数の和:6601

約数の個数: 48

約数和(自身を含む): 51999090

約数和(自身を除く): 30952690

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6577, 13154, 26308, 32885, 52616, 65770, 105232, 131540, 164425, 210464, 263080, 328850, 420928, 526160, 657700, 841856, 1052320, 1315400, 2104640, 2630800, 4209280, 5261600, 10523200, 21046400]

約数ペア:

[(1, 21046400), (2, 10523200), (4, 5261600), (5, 4209280), (8, 2630800), (10, 2104640), (16, 1315400), (20, 1052320), (25, 841856), (32, 657700), (40, 526160), (50, 420928), (64, 328850), (80, 263080), (100, 210464), (128, 164425), (160, 131540), (200, 105232), (320, 65770), (400, 52616), (640, 32885), (800, 26308), (1600, 13154), (3200, 6577)]