21104000

素因数分解:

$2^7\times 5^3\times {\mathrm{1319}}^1$

素因数の和:1348

約数の個数: 64

約数和(自身を含む): 52509600

約数和(自身を除く): 31405600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1319, 1600, 2000, 2638, 3200, 4000, 5276, 6595, 8000, 10552, 13190, 16000, 21104, 26380, 32975, 42208, 52760, 65950, 84416, 105520, 131900, 164875, 168832, 211040, 263800, 329750, 422080, 527600, 659500, 844160, 1055200, 1319000, 2110400, 2638000, 4220800, 5276000, 10552000, 21104000]

約数ペア:

[(1, 21104000), (2, 10552000), (4, 5276000), (5, 4220800), (8, 2638000), (10, 2110400), (16, 1319000), (20, 1055200), (25, 844160), (32, 659500), (40, 527600), (50, 422080), (64, 329750), (80, 263800), (100, 211040), (125, 168832), (128, 164875), (160, 131900), (200, 105520), (250, 84416), (320, 65950), (400, 52760), (500, 42208), (640, 32975), (800, 26380), (1000, 21104), (1319, 16000), (1600, 13190), (2000, 10552), (2638, 8000), (3200, 6595), (4000, 5276)]