80616400

素因数分解:

$2^4\times 5^2\times {\mathrm{43}}^2\times {\mathrm{109}}^1$

素因数の和:213

約数の個数: 90

約数和(自身を含む): 200109030

約数和(自身を除く): 119492630

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 109, 172, 200, 215, 218, 344, 400, 430, 436, 545, 688, 860, 872, 1075, 1090, 1720, 1744, 1849, 2150, 2180, 2725, 3440, 3698, 4300, 4360, 4687, 5450, 7396, 8600, 8720, 9245, 9374, 10900, 14792, 17200, 18490, 18748, 21800, 23435, 29584, 36980, 37496, 43600, 46225, 46870, 73960, 74992, 92450, 93740, 117175, 147920, 184900, 187480, 201541, 234350, 369800, 374960, 403082, 468700, 739600, 806164, 937400, 1007705, 1612328, 1874800, 2015410, 3224656, 4030820, 5038525, 8061640, 10077050, 16123280, 20154100, 40308200, 80616400]

約数ペア:

[(1, 80616400), (2, 40308200), (4, 20154100), (5, 16123280), (8, 10077050), (10, 8061640), (16, 5038525), (20, 4030820), (25, 3224656), (40, 2015410), (43, 1874800), (50, 1612328), (80, 1007705), (86, 937400), (100, 806164), (109, 739600), (172, 468700), (200, 403082), (215, 374960), (218, 369800), (344, 234350), (400, 201541), (430, 187480), (436, 184900), (545, 147920), (688, 117175), (860, 93740), (872, 92450), (1075, 74992), (1090, 73960), (1720, 46870), (1744, 46225), (1849, 43600), (2150, 37496), (2180, 36980), (2725, 29584), (3440, 23435), (3698, 21800), (4300, 18748), (4360, 18490), (4687, 17200), (5450, 14792), (7396, 10900), (8600, 9374), (8720, 9245)]