25511800

素因数分解:

$2^3\times 5^2\times {\mathrm{199}}^1\times {\mathrm{641}}^1$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 59706000

約数和(自身を除く): 34194200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 199, 200, 398, 641, 796, 995, 1282, 1592, 1990, 2564, 3205, 3980, 4975, 5128, 6410, 7960, 9950, 12820, 16025, 19900, 25640, 32050, 39800, 64100, 127559, 128200, 255118, 510236, 637795, 1020472, 1275590, 2551180, 3188975, 5102360, 6377950, 12755900, 25511800]

約数ペア:

[(1, 25511800), (2, 12755900), (4, 6377950), (5, 5102360), (8, 3188975), (10, 2551180), (20, 1275590), (25, 1020472), (40, 637795), (50, 510236), (100, 255118), (199, 128200), (200, 127559), (398, 64100), (641, 39800), (796, 32050), (995, 25640), (1282, 19900), (1592, 16025), (1990, 12820), (2564, 9950), (3205, 7960), (3980, 6410), (4975, 5128)]