20168000

素因数分解:

$2^6\times 5^3\times {\mathrm{2521}}^1$

素因数の和:2548

約数の個数: 56

約数和(自身を含む): 49965864

約数和(自身を除く): 29797864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1600, 2000, 2521, 4000, 5042, 8000, 10084, 12605, 20168, 25210, 40336, 50420, 63025, 80672, 100840, 126050, 161344, 201680, 252100, 315125, 403360, 504200, 630250, 806720, 1008400, 1260500, 2016800, 2521000, 4033600, 5042000, 10084000, 20168000]

約数ペア:

[(1, 20168000), (2, 10084000), (4, 5042000), (5, 4033600), (8, 2521000), (10, 2016800), (16, 1260500), (20, 1008400), (25, 806720), (32, 630250), (40, 504200), (50, 403360), (64, 315125), (80, 252100), (100, 201680), (125, 161344), (160, 126050), (200, 100840), (250, 80672), (320, 63025), (400, 50420), (500, 40336), (800, 25210), (1000, 20168), (1600, 12605), (2000, 10084), (2521, 8000), (4000, 5042)]