201680000

素因数分解:

$2^7\times 5^4\times {\mathrm{2521}}^1$

素因数の和:2555

約数の個数: 80

約数和(自身を含む): 502268910

約数和(自身を除く): 300588910

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, 625, 640, 800, 1000, 1250, 1600, 2000, 2500, 2521, 3200, 4000, 5000, 5042, 8000, 10000, 10084, 12605, 16000, 20000, 20168, 25210, 40000, 40336, 50420, 63025, 80000, 80672, 100840, 126050, 161344, 201680, 252100, 315125, 322688, 403360, 504200, 630250, 806720, 1008400, 1260500, 1575625, 1613440, 2016800, 2521000, 3151250, 4033600, 5042000, 6302500, 8067200, 10084000, 12605000, 20168000, 25210000, 40336000, 50420000, 100840000, 201680000]

約数ペア:

[(1, 201680000), (2, 100840000), (4, 50420000), (5, 40336000), (8, 25210000), (10, 20168000), (16, 12605000), (20, 10084000), (25, 8067200), (32, 6302500), (40, 5042000), (50, 4033600), (64, 3151250), (80, 2521000), (100, 2016800), (125, 1613440), (128, 1575625), (160, 1260500), (200, 1008400), (250, 806720), (320, 630250), (400, 504200), (500, 403360), (625, 322688), (640, 315125), (800, 252100), (1000, 201680), (1250, 161344), (1600, 126050), (2000, 100840), (2500, 80672), (2521, 80000), (3200, 63025), (4000, 50420), (5000, 40336), (5042, 40000), (8000, 25210), (10000, 20168), (10084, 20000), (12605, 16000)]