81968000

素因数分解:

$2^7\times 5^3\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:185

約数の個数: 128

約数和(自身を含む): 210038400

約数和(自身を除く): 128070400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 47, 50, 64, 80, 94, 100, 109, 125, 128, 160, 188, 200, 218, 235, 250, 320, 376, 400, 436, 470, 500, 545, 640, 752, 800, 872, 940, 1000, 1090, 1175, 1504, 1600, 1744, 1880, 2000, 2180, 2350, 2725, 3008, 3200, 3488, 3760, 4000, 4360, 4700, 5123, 5450, 5875, 6016, 6976, 7520, 8000, 8720, 9400, 10246, 10900, 11750, 13625, 13952, 15040, 16000, 17440, 18800, 20492, 21800, 23500, 25615, 27250, 30080, 34880, 37600, 40984, 43600, 47000, 51230, 54500, 69760, 75200, 81968, 87200, 94000, 102460, 109000, 128075, 150400, 163936, 174400, 188000, 204920, 218000, 256150, 327872, 348800, 376000, 409840, 436000, 512300, 640375, 655744, 752000, 819680, 872000, 1024600, 1280750, 1639360, 1744000, 2049200, 2561500, 3278720, 4098400, 5123000, 8196800, 10246000, 16393600, 20492000, 40984000, 81968000]

約数ペア:

[(1, 81968000), (2, 40984000), (4, 20492000), (5, 16393600), (8, 10246000), (10, 8196800), (16, 5123000), (20, 4098400), (25, 3278720), (32, 2561500), (40, 2049200), (47, 1744000), (50, 1639360), (64, 1280750), (80, 1024600), (94, 872000), (100, 819680), (109, 752000), (125, 655744), (128, 640375), (160, 512300), (188, 436000), (200, 409840), (218, 376000), (235, 348800), (250, 327872), (320, 256150), (376, 218000), (400, 204920), (436, 188000), (470, 174400), (500, 163936), (545, 150400), (640, 128075), (752, 109000), (800, 102460), (872, 94000), (940, 87200), (1000, 81968), (1090, 75200), (1175, 69760), (1504, 54500), (1600, 51230), (1744, 47000), (1880, 43600), (2000, 40984), (2180, 37600), (2350, 34880), (2725, 30080), (3008, 27250), (3200, 25615), (3488, 23500), (3760, 21800), (4000, 20492), (4360, 18800), (4700, 17440), (5123, 16000), (5450, 15040), (5875, 13952), (6016, 13625), (6976, 11750), (7520, 10900), (8000, 10246), (8720, 9400)]