64868080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:338

約数の個数: 80

約数和(自身を含む): 156641760

約数和(自身を除く): 91773680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 109, 172, 173, 215, 218, 344, 346, 430, 436, 545, 688, 692, 860, 865, 872, 1090, 1384, 1720, 1730, 1744, 2180, 2768, 3440, 3460, 4360, 4687, 6920, 7439, 8720, 9374, 13840, 14878, 18748, 18857, 23435, 29756, 37195, 37496, 37714, 46870, 59512, 74390, 74992, 75428, 93740, 94285, 119024, 148780, 150856, 187480, 188570, 297560, 301712, 374960, 377140, 595120, 754280, 810851, 1508560, 1621702, 3243404, 4054255, 6486808, 8108510, 12973616, 16217020, 32434040, 64868080]

約数ペア:

[(1, 64868080), (2, 32434040), (4, 16217020), (5, 12973616), (8, 8108510), (10, 6486808), (16, 4054255), (20, 3243404), (40, 1621702), (43, 1508560), (80, 810851), (86, 754280), (109, 595120), (172, 377140), (173, 374960), (215, 301712), (218, 297560), (344, 188570), (346, 187480), (430, 150856), (436, 148780), (545, 119024), (688, 94285), (692, 93740), (860, 75428), (865, 74992), (872, 74390), (1090, 59512), (1384, 46870), (1720, 37714), (1730, 37496), (1744, 37195), (2180, 29756), (2768, 23435), (3440, 18857), (3460, 18748), (4360, 14878), (4687, 13840), (6920, 9374), (7439, 8720)]