81910700

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^2\times {\mathrm{443}}^1$

素因数の和:543

約数の個数: 54

約数和(自身を含む): 182386764

約数和(自身を除く): 100476064

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 443, 860, 886, 1075, 1772, 1849, 2150, 2215, 3698, 4300, 4430, 7396, 8860, 9245, 11075, 18490, 19049, 22150, 36980, 38098, 44300, 46225, 76196, 92450, 95245, 184900, 190490, 380980, 476225, 819107, 952450, 1638214, 1904900, 3276428, 4095535, 8191070, 16382140, 20477675, 40955350, 81910700]

約数ペア:

[(1, 81910700), (2, 40955350), (4, 20477675), (5, 16382140), (10, 8191070), (20, 4095535), (25, 3276428), (43, 1904900), (50, 1638214), (86, 952450), (100, 819107), (172, 476225), (215, 380980), (430, 190490), (443, 184900), (860, 95245), (886, 92450), (1075, 76196), (1772, 46225), (1849, 44300), (2150, 38098), (2215, 36980), (3698, 22150), (4300, 19049), (4430, 18490), (7396, 11075), (8860, 9245)]