20638000

素因数分解:

$2^4\times 5^3\times {\mathrm{17}}^1\times {\mathrm{607}}^1$

素因数の和:647

約数の個数: 80

約数和(自身を含む): 52925184

約数和(自身を除く): 32287184

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 125, 136, 170, 200, 250, 272, 340, 400, 425, 500, 607, 680, 850, 1000, 1214, 1360, 1700, 2000, 2125, 2428, 3035, 3400, 4250, 4856, 6070, 6800, 8500, 9712, 10319, 12140, 15175, 17000, 20638, 24280, 30350, 34000, 41276, 48560, 51595, 60700, 75875, 82552, 103190, 121400, 151750, 165104, 206380, 242800, 257975, 303500, 412760, 515950, 607000, 825520, 1031900, 1214000, 1289875, 2063800, 2579750, 4127600, 5159500, 10319000, 20638000]

約数ペア:

[(1, 20638000), (2, 10319000), (4, 5159500), (5, 4127600), (8, 2579750), (10, 2063800), (16, 1289875), (17, 1214000), (20, 1031900), (25, 825520), (34, 607000), (40, 515950), (50, 412760), (68, 303500), (80, 257975), (85, 242800), (100, 206380), (125, 165104), (136, 151750), (170, 121400), (200, 103190), (250, 82552), (272, 75875), (340, 60700), (400, 51595), (425, 48560), (500, 41276), (607, 34000), (680, 30350), (850, 24280), (1000, 20638), (1214, 17000), (1360, 15175), (1700, 12140), (2000, 10319), (2125, 9712), (2428, 8500), (3035, 6800), (3400, 6070), (4250, 4856)]