21591800

素因数分解:

$2^3\times 5^2\times {\mathrm{47}}^1\times {\mathrm{2297}}^1$

素因数の和:2360

約数の個数: 48

約数和(自身を含む): 51291360

約数和(自身を除く): 29699560

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 94, 100, 188, 200, 235, 376, 470, 940, 1175, 1880, 2297, 2350, 4594, 4700, 9188, 9400, 11485, 18376, 22970, 45940, 57425, 91880, 107959, 114850, 215918, 229700, 431836, 459400, 539795, 863672, 1079590, 2159180, 2698975, 4318360, 5397950, 10795900, 21591800]

約数ペア:

[(1, 21591800), (2, 10795900), (4, 5397950), (5, 4318360), (8, 2698975), (10, 2159180), (20, 1079590), (25, 863672), (40, 539795), (47, 459400), (50, 431836), (94, 229700), (100, 215918), (188, 114850), (200, 107959), (235, 91880), (376, 57425), (470, 45940), (940, 22970), (1175, 18376), (1880, 11485), (2297, 9400), (2350, 9188), (4594, 4700)]