19905900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9479}}^1$

素因数の和:9503

約数の個数: 72

約数和(自身を含む): 65829120

約数和(自身を除く): 45923220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9479, 18958, 28437, 37916, 47395, 56874, 66353, 94790, 113748, 132706, 142185, 189580, 199059, 236975, 265412, 284370, 331765, 398118, 473950, 568740, 663530, 710925, 796236, 947900, 995295, 1327060, 1421850, 1658825, 1990590, 2843700, 3317650, 3981180, 4976475, 6635300, 9952950, 19905900]

約数ペア:

[(1, 19905900), (2, 9952950), (3, 6635300), (4, 4976475), (5, 3981180), (6, 3317650), (7, 2843700), (10, 1990590), (12, 1658825), (14, 1421850), (15, 1327060), (20, 995295), (21, 947900), (25, 796236), (28, 710925), (30, 663530), (35, 568740), (42, 473950), (50, 398118), (60, 331765), (70, 284370), (75, 265412), (84, 236975), (100, 199059), (105, 189580), (140, 142185), (150, 132706), (175, 113748), (210, 94790), (300, 66353), (350, 56874), (420, 47395), (525, 37916), (700, 28437), (1050, 18958), (2100, 9479)]