68800000

素因数分解:

$2^9\times 5^5\times {\mathrm{43}}^1$

素因数の和:86

約数の個数: 120

約数和(自身を含む): 175816872

約数和(自身を除く): 107016872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 64, 80, 86, 100, 125, 128, 160, 172, 200, 215, 250, 256, 320, 344, 400, 430, 500, 512, 625, 640, 688, 800, 860, 1000, 1075, 1250, 1280, 1376, 1600, 1720, 2000, 2150, 2500, 2560, 2752, 3125, 3200, 3440, 4000, 4300, 5000, 5375, 5504, 6250, 6400, 6880, 8000, 8600, 10000, 10750, 11008, 12500, 12800, 13760, 16000, 17200, 20000, 21500, 22016, 25000, 26875, 27520, 32000, 34400, 40000, 43000, 50000, 53750, 55040, 64000, 68800, 80000, 86000, 100000, 107500, 110080, 134375, 137600, 160000, 172000, 200000, 215000, 268750, 275200, 320000, 344000, 400000, 430000, 537500, 550400, 688000, 800000, 860000, 1075000, 1376000, 1600000, 1720000, 2150000, 2752000, 3440000, 4300000, 6880000, 8600000, 13760000, 17200000, 34400000, 68800000]

約数ペア:

[(1, 68800000), (2, 34400000), (4, 17200000), (5, 13760000), (8, 8600000), (10, 6880000), (16, 4300000), (20, 3440000), (25, 2752000), (32, 2150000), (40, 1720000), (43, 1600000), (50, 1376000), (64, 1075000), (80, 860000), (86, 800000), (100, 688000), (125, 550400), (128, 537500), (160, 430000), (172, 400000), (200, 344000), (215, 320000), (250, 275200), (256, 268750), (320, 215000), (344, 200000), (400, 172000), (430, 160000), (500, 137600), (512, 134375), (625, 110080), (640, 107500), (688, 100000), (800, 86000), (860, 80000), (1000, 68800), (1075, 64000), (1250, 55040), (1280, 53750), (1376, 50000), (1600, 43000), (1720, 40000), (2000, 34400), (2150, 32000), (2500, 27520), (2560, 26875), (2752, 25000), (3125, 22016), (3200, 21500), (3440, 20000), (4000, 17200), (4300, 16000), (5000, 13760), (5375, 12800), (5504, 12500), (6250, 11008), (6400, 10750), (6880, 10000), (8000, 8600)]