12127720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{641}}^1$

素因数の和:706

約数の個数: 64

約数和(自身を含む): 30507840

約数和(自身を除く): 18380120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 641, 860, 946, 1282, 1720, 1892, 2365, 2564, 3205, 3784, 4730, 5128, 6410, 7051, 9460, 12820, 14102, 18920, 25640, 27563, 28204, 35255, 55126, 56408, 70510, 110252, 137815, 141020, 220504, 275630, 282040, 303193, 551260, 606386, 1102520, 1212772, 1515965, 2425544, 3031930, 6063860, 12127720]

約数ペア:

[(1, 12127720), (2, 6063860), (4, 3031930), (5, 2425544), (8, 1515965), (10, 1212772), (11, 1102520), (20, 606386), (22, 551260), (40, 303193), (43, 282040), (44, 275630), (55, 220504), (86, 141020), (88, 137815), (110, 110252), (172, 70510), (215, 56408), (220, 55126), (344, 35255), (430, 28204), (440, 27563), (473, 25640), (641, 18920), (860, 14102), (946, 12820), (1282, 9460), (1720, 7051), (1892, 6410), (2365, 5128), (2564, 4730), (3205, 3784)]