16685000

素因数分解:

$2^3\times 5^4\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:144

約数の個数: 80

約数和(自身を含む): 40487040

約数和(自身を除く): 23802040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 71, 94, 100, 125, 142, 188, 200, 235, 250, 284, 355, 376, 470, 500, 568, 625, 710, 940, 1000, 1175, 1250, 1420, 1775, 1880, 2350, 2500, 2840, 3337, 3550, 4700, 5000, 5875, 6674, 7100, 8875, 9400, 11750, 13348, 14200, 16685, 17750, 23500, 26696, 29375, 33370, 35500, 44375, 47000, 58750, 66740, 71000, 83425, 88750, 117500, 133480, 166850, 177500, 235000, 333700, 355000, 417125, 667400, 834250, 1668500, 2085625, 3337000, 4171250, 8342500, 16685000]

約数ペア:

[(1, 16685000), (2, 8342500), (4, 4171250), (5, 3337000), (8, 2085625), (10, 1668500), (20, 834250), (25, 667400), (40, 417125), (47, 355000), (50, 333700), (71, 235000), (94, 177500), (100, 166850), (125, 133480), (142, 117500), (188, 88750), (200, 83425), (235, 71000), (250, 66740), (284, 58750), (355, 47000), (376, 44375), (470, 35500), (500, 33370), (568, 29375), (625, 26696), (710, 23500), (940, 17750), (1000, 16685), (1175, 14200), (1250, 13348), (1420, 11750), (1775, 9400), (1880, 8875), (2350, 7100), (2500, 6674), (2840, 5875), (3337, 5000), (3550, 4700)]