87235820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{337}}^1$

素因数の和:439

約数の個数: 72

約数和(自身を含む): 214984224

約数和(自身を除く): 127748404

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 337, 430, 602, 674, 860, 1204, 1348, 1505, 1685, 1849, 2359, 3010, 3370, 3698, 4718, 6020, 6740, 7396, 9245, 9436, 11795, 12943, 14491, 18490, 23590, 25886, 28982, 36980, 47180, 51772, 57964, 64715, 72455, 101437, 129430, 144910, 202874, 258860, 289820, 405748, 507185, 623113, 1014370, 1246226, 2028740, 2492452, 3115565, 4361791, 6231130, 8723582, 12462260, 17447164, 21808955, 43617910, 87235820]

約数ペア:

[(1, 87235820), (2, 43617910), (4, 21808955), (5, 17447164), (7, 12462260), (10, 8723582), (14, 6231130), (20, 4361791), (28, 3115565), (35, 2492452), (43, 2028740), (70, 1246226), (86, 1014370), (140, 623113), (172, 507185), (215, 405748), (301, 289820), (337, 258860), (430, 202874), (602, 144910), (674, 129430), (860, 101437), (1204, 72455), (1348, 64715), (1505, 57964), (1685, 51772), (1849, 47180), (2359, 36980), (3010, 28982), (3370, 25886), (3698, 23590), (4718, 18490), (6020, 14491), (6740, 12943), (7396, 11795), (9245, 9436)]