18042800

素因数分解:

$2^4\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1049}}^1$

素因数の和:1110

約数の個数: 60

約数和(自身を含む): 44398200

約数和(自身を除く): 26355400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 172, 200, 215, 344, 400, 430, 688, 860, 1049, 1075, 1720, 2098, 2150, 3440, 4196, 4300, 5245, 8392, 8600, 10490, 16784, 17200, 20980, 26225, 41960, 45107, 52450, 83920, 90214, 104900, 180428, 209800, 225535, 360856, 419600, 451070, 721712, 902140, 1127675, 1804280, 2255350, 3608560, 4510700, 9021400, 18042800]

約数ペア:

[(1, 18042800), (2, 9021400), (4, 4510700), (5, 3608560), (8, 2255350), (10, 1804280), (16, 1127675), (20, 902140), (25, 721712), (40, 451070), (43, 419600), (50, 360856), (80, 225535), (86, 209800), (100, 180428), (172, 104900), (200, 90214), (215, 83920), (344, 52450), (400, 45107), (430, 41960), (688, 26225), (860, 20980), (1049, 17200), (1075, 16784), (1720, 10490), (2098, 8600), (2150, 8392), (3440, 5245), (4196, 4300)]