127559000

素因数分解:

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

素因数の和:861

約数の個数: 64

約数和(自身を含む): 300456000

約数和(自身を除く): 172897000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 199, 200, 250, 398, 500, 641, 796, 995, 1000, 1282, 1592, 1990, 2564, 3205, 3980, 4975, 5128, 6410, 7960, 9950, 12820, 16025, 19900, 24875, 25640, 32050, 39800, 49750, 64100, 80125, 99500, 127559, 128200, 160250, 199000, 255118, 320500, 510236, 637795, 641000, 1020472, 1275590, 2551180, 3188975, 5102360, 6377950, 12755900, 15944875, 25511800, 31889750, 63779500, 127559000]

約数ペア:

[(1, 127559000), (2, 63779500), (4, 31889750), (5, 25511800), (8, 15944875), (10, 12755900), (20, 6377950), (25, 5102360), (40, 3188975), (50, 2551180), (100, 1275590), (125, 1020472), (199, 641000), (200, 637795), (250, 510236), (398, 320500), (500, 255118), (641, 199000), (796, 160250), (995, 128200), (1000, 127559), (1282, 99500), (1592, 80125), (1990, 64100), (2564, 49750), (3205, 39800), (3980, 32050), (4975, 25640), (5128, 24875), (6410, 19900), (7960, 16025), (9950, 12820)]