81234800

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:243

約数の個数: 120

約数和(自身を含む): 207576000

約数和(自身を除く): 126341200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 47, 50, 58, 80, 94, 100, 116, 145, 149, 188, 200, 232, 235, 290, 298, 376, 400, 464, 470, 580, 596, 725, 745, 752, 940, 1160, 1175, 1192, 1363, 1450, 1490, 1880, 2320, 2350, 2384, 2726, 2900, 2980, 3725, 3760, 4321, 4700, 5452, 5800, 5960, 6815, 7003, 7450, 8642, 9400, 10904, 11600, 11920, 13630, 14006, 14900, 17284, 18800, 21605, 21808, 27260, 28012, 29800, 34075, 34568, 35015, 43210, 54520, 56024, 59600, 68150, 69136, 70030, 86420, 108025, 109040, 112048, 136300, 140060, 172840, 175075, 203087, 216050, 272600, 280120, 345680, 350150, 406174, 432100, 545200, 560240, 700300, 812348, 864200, 1015435, 1400600, 1624696, 1728400, 2030870, 2801200, 3249392, 4061740, 5077175, 8123480, 10154350, 16246960, 20308700, 40617400, 81234800]

約数ペア:

[(1, 81234800), (2, 40617400), (4, 20308700), (5, 16246960), (8, 10154350), (10, 8123480), (16, 5077175), (20, 4061740), (25, 3249392), (29, 2801200), (40, 2030870), (47, 1728400), (50, 1624696), (58, 1400600), (80, 1015435), (94, 864200), (100, 812348), (116, 700300), (145, 560240), (149, 545200), (188, 432100), (200, 406174), (232, 350150), (235, 345680), (290, 280120), (298, 272600), (376, 216050), (400, 203087), (464, 175075), (470, 172840), (580, 140060), (596, 136300), (725, 112048), (745, 109040), (752, 108025), (940, 86420), (1160, 70030), (1175, 69136), (1192, 68150), (1363, 59600), (1450, 56024), (1490, 54520), (1880, 43210), (2320, 35015), (2350, 34568), (2384, 34075), (2726, 29800), (2900, 28012), (2980, 27260), (3725, 21808), (3760, 21605), (4321, 18800), (4700, 17284), (5452, 14900), (5800, 14006), (5960, 13630), (6815, 11920), (7003, 11600), (7450, 10904), (8642, 9400)]