128274280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:191

約数の個数: 96

約数和(自身を含む): 308862720

約数和(自身を除く): 180588440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 71, 94, 124, 142, 155, 188, 235, 248, 284, 310, 355, 376, 470, 568, 620, 710, 940, 961, 1240, 1420, 1457, 1880, 1922, 2201, 2840, 2914, 3337, 3844, 4402, 4805, 5828, 6674, 7285, 7688, 8804, 9610, 11005, 11656, 13348, 14570, 16685, 17608, 19220, 22010, 26696, 29140, 33370, 38440, 44020, 45167, 58280, 66740, 68231, 88040, 90334, 103447, 133480, 136462, 180668, 206894, 225835, 272924, 341155, 361336, 413788, 451670, 517235, 545848, 682310, 827576, 903340, 1034470, 1364620, 1806680, 2068940, 2729240, 3206857, 4137880, 6413714, 12827428, 16034285, 25654856, 32068570, 64137140, 128274280]

約数ペア:

[(1, 128274280), (2, 64137140), (4, 32068570), (5, 25654856), (8, 16034285), (10, 12827428), (20, 6413714), (31, 4137880), (40, 3206857), (47, 2729240), (62, 2068940), (71, 1806680), (94, 1364620), (124, 1034470), (142, 903340), (155, 827576), (188, 682310), (235, 545848), (248, 517235), (284, 451670), (310, 413788), (355, 361336), (376, 341155), (470, 272924), (568, 225835), (620, 206894), (710, 180668), (940, 136462), (961, 133480), (1240, 103447), (1420, 90334), (1457, 88040), (1880, 68231), (1922, 66740), (2201, 58280), (2840, 45167), (2914, 44020), (3337, 38440), (3844, 33370), (4402, 29140), (4805, 26696), (5828, 22010), (6674, 19220), (7285, 17608), (7688, 16685), (8804, 14570), (9610, 13348), (11005, 11656)]