287707980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{685019}}^1$

素因数の和:685038

約数の個数: 48

約数和(自身を含む): 920666880

約数和(自身を除く): 632958900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 685019, 1370038, 2055057, 2740076, 3425095, 4110114, 4795133, 6850190, 8220228, 9590266, 10275285, 13700380, 14385399, 19180532, 20550570, 23975665, 28770798, 41101140, 47951330, 57541596, 71926995, 95902660, 143853990, 287707980]

約数ペア:

[(1, 287707980), (2, 143853990), (3, 95902660), (4, 71926995), (5, 57541596), (6, 47951330), (7, 41101140), (10, 28770798), (12, 23975665), (14, 20550570), (15, 19180532), (20, 14385399), (21, 13700380), (28, 10275285), (30, 9590266), (35, 8220228), (42, 6850190), (60, 4795133), (70, 4110114), (84, 3425095), (105, 2740076), (140, 2055057), (210, 1370038), (420, 685019)]