19789000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1$

素因数の和:296

約数の個数: 128

約数和(自身を含む): 57957120

約数和(自身を除く): 38168120

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 70, 77, 88, 100, 110, 125, 140, 154, 175, 200, 220, 250, 257, 275, 280, 308, 350, 385, 440, 500, 514, 550, 616, 700, 770, 875, 1000, 1028, 1100, 1285, 1375, 1400, 1540, 1750, 1799, 1925, 2056, 2200, 2570, 2750, 2827, 3080, 3500, 3598, 3850, 5140, 5500, 5654, 6425, 7000, 7196, 7700, 8995, 9625, 10280, 11000, 11308, 12850, 14135, 14392, 15400, 17990, 19250, 19789, 22616, 25700, 28270, 32125, 35980, 38500, 39578, 44975, 51400, 56540, 64250, 70675, 71960, 77000, 79156, 89950, 98945, 113080, 128500, 141350, 158312, 179900, 197890, 224875, 257000, 282700, 353375, 359800, 395780, 449750, 494725, 565400, 706750, 791560, 899500, 989450, 1413500, 1799000, 1978900, 2473625, 2827000, 3957800, 4947250, 9894500, 19789000]

約数ペア:

[(1, 19789000), (2, 9894500), (4, 4947250), (5, 3957800), (7, 2827000), (8, 2473625), (10, 1978900), (11, 1799000), (14, 1413500), (20, 989450), (22, 899500), (25, 791560), (28, 706750), (35, 565400), (40, 494725), (44, 449750), (50, 395780), (55, 359800), (56, 353375), (70, 282700), (77, 257000), (88, 224875), (100, 197890), (110, 179900), (125, 158312), (140, 141350), (154, 128500), (175, 113080), (200, 98945), (220, 89950), (250, 79156), (257, 77000), (275, 71960), (280, 70675), (308, 64250), (350, 56540), (385, 51400), (440, 44975), (500, 39578), (514, 38500), (550, 35980), (616, 32125), (700, 28270), (770, 25700), (875, 22616), (1000, 19789), (1028, 19250), (1100, 17990), (1285, 15400), (1375, 14392), (1400, 14135), (1540, 12850), (1750, 11308), (1799, 11000), (1925, 10280), (2056, 9625), (2200, 8995), (2570, 7700), (2750, 7196), (2827, 7000), (3080, 6425), (3500, 5654), (3598, 5500), (3850, 5140)]