1640230400

素因数分解:

$2^9\times 5^2\times {\mathrm{127}}^1\times {\mathrm{1009}}^1$

素因数の和:1164

約数の個数: 120

約数和(自身を含む): 4099856640

約数和(自身を除く): 2459626240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 127, 128, 160, 200, 254, 256, 320, 400, 508, 512, 635, 640, 800, 1009, 1016, 1270, 1280, 1600, 2018, 2032, 2540, 2560, 3175, 3200, 4036, 4064, 5045, 5080, 6350, 6400, 8072, 8128, 10090, 10160, 12700, 12800, 16144, 16256, 20180, 20320, 25225, 25400, 32288, 32512, 40360, 40640, 50450, 50800, 64576, 65024, 80720, 81280, 100900, 101600, 128143, 129152, 161440, 162560, 201800, 203200, 256286, 258304, 322880, 325120, 403600, 406400, 512572, 516608, 640715, 645760, 807200, 812800, 1025144, 1281430, 1291520, 1614400, 1625600, 2050288, 2562860, 2583040, 3203575, 3228800, 4100576, 5125720, 6407150, 6457600, 8201152, 10251440, 12814300, 12915200, 16402304, 20502880, 25628600, 32804608, 41005760, 51257200, 65609216, 82011520, 102514400, 164023040, 205028800, 328046080, 410057600, 820115200, 1640230400]

約数ペア:

[(1, 1640230400), (2, 820115200), (4, 410057600), (5, 328046080), (8, 205028800), (10, 164023040), (16, 102514400), (20, 82011520), (25, 65609216), (32, 51257200), (40, 41005760), (50, 32804608), (64, 25628600), (80, 20502880), (100, 16402304), (127, 12915200), (128, 12814300), (160, 10251440), (200, 8201152), (254, 6457600), (256, 6407150), (320, 5125720), (400, 4100576), (508, 3228800), (512, 3203575), (635, 2583040), (640, 2562860), (800, 2050288), (1009, 1625600), (1016, 1614400), (1270, 1291520), (1280, 1281430), (1600, 1025144), (2018, 812800), (2032, 807200), (2540, 645760), (2560, 640715), (3175, 516608), (3200, 512572), (4036, 406400), (4064, 403600), (5045, 325120), (5080, 322880), (6350, 258304), (6400, 256286), (8072, 203200), (8128, 201800), (10090, 162560), (10160, 161440), (12700, 129152), (12800, 128143), (16144, 101600), (16256, 100900), (20180, 81280), (20320, 80720), (25225, 65024), (25400, 64576), (32288, 50800), (32512, 50450), (40360, 40640)]