25210000

素因数分解:

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

素因数の和:2549

約数の個数: 50

約数和(自身を含む): 61060142

約数和(自身を除く): 35850142

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 2521, 5000, 5042, 10000, 10084, 12605, 20168, 25210, 40336, 50420, 63025, 100840, 126050, 201680, 252100, 315125, 504200, 630250, 1008400, 1260500, 1575625, 2521000, 3151250, 5042000, 6302500, 12605000, 25210000]

約数ペア:

[(1, 25210000), (2, 12605000), (4, 6302500), (5, 5042000), (8, 3151250), (10, 2521000), (16, 1575625), (20, 1260500), (25, 1008400), (40, 630250), (50, 504200), (80, 315125), (100, 252100), (125, 201680), (200, 126050), (250, 100840), (400, 63025), (500, 50420), (625, 40336), (1000, 25210), (1250, 20168), (2000, 12605), (2500, 10084), (2521, 10000), (5000, 5042)]