18205880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:309

約数の個数: 128

約数和(自身を含む): 53498880

約数和(自身を除く): 35293000

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 23, 28, 35, 40, 44, 46, 55, 56, 70, 77, 88, 92, 110, 115, 140, 154, 161, 184, 220, 230, 253, 257, 280, 308, 322, 385, 440, 460, 506, 514, 616, 644, 770, 805, 920, 1012, 1028, 1265, 1285, 1288, 1540, 1610, 1771, 1799, 2024, 2056, 2530, 2570, 2827, 3080, 3220, 3542, 3598, 5060, 5140, 5654, 5911, 6440, 7084, 7196, 8855, 8995, 10120, 10280, 11308, 11822, 14135, 14168, 14392, 17710, 17990, 19789, 22616, 23644, 28270, 29555, 35420, 35980, 39578, 41377, 47288, 56540, 59110, 65021, 70840, 71960, 79156, 82754, 98945, 113080, 118220, 130042, 158312, 165508, 197890, 206885, 236440, 260084, 325105, 331016, 395780, 413770, 455147, 520168, 650210, 791560, 827540, 910294, 1300420, 1655080, 1820588, 2275735, 2600840, 3641176, 4551470, 9102940, 18205880]

約数ペア:

[(1, 18205880), (2, 9102940), (4, 4551470), (5, 3641176), (7, 2600840), (8, 2275735), (10, 1820588), (11, 1655080), (14, 1300420), (20, 910294), (22, 827540), (23, 791560), (28, 650210), (35, 520168), (40, 455147), (44, 413770), (46, 395780), (55, 331016), (56, 325105), (70, 260084), (77, 236440), (88, 206885), (92, 197890), (110, 165508), (115, 158312), (140, 130042), (154, 118220), (161, 113080), (184, 98945), (220, 82754), (230, 79156), (253, 71960), (257, 70840), (280, 65021), (308, 59110), (322, 56540), (385, 47288), (440, 41377), (460, 39578), (506, 35980), (514, 35420), (616, 29555), (644, 28270), (770, 23644), (805, 22616), (920, 19789), (1012, 17990), (1028, 17710), (1265, 14392), (1285, 14168), (1288, 14135), (1540, 11822), (1610, 11308), (1771, 10280), (1799, 10120), (2024, 8995), (2056, 8855), (2530, 7196), (2570, 7084), (2827, 6440), (3080, 5911), (3220, 5654), (3542, 5140), (3598, 5060)]