86999920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{337}}^1\times {\mathrm{461}}^1$

素因数の和:818

約数の個数: 80

約数和(自身を含む): 232360128

約数和(自身を除く): 145360208

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 337, 461, 560, 674, 922, 1348, 1685, 1844, 2305, 2359, 2696, 3227, 3370, 3688, 4610, 4718, 5392, 6454, 6740, 7376, 9220, 9436, 11795, 12908, 13480, 16135, 18440, 18872, 23590, 25816, 26960, 32270, 36880, 37744, 47180, 51632, 64540, 94360, 129080, 155357, 188720, 258160, 310714, 621428, 776785, 1087499, 1242856, 1553570, 2174998, 2485712, 3107140, 4349996, 5437495, 6214280, 8699992, 10874990, 12428560, 17399984, 21749980, 43499960, 86999920]

約数ペア:

[(1, 86999920), (2, 43499960), (4, 21749980), (5, 17399984), (7, 12428560), (8, 10874990), (10, 8699992), (14, 6214280), (16, 5437495), (20, 4349996), (28, 3107140), (35, 2485712), (40, 2174998), (56, 1553570), (70, 1242856), (80, 1087499), (112, 776785), (140, 621428), (280, 310714), (337, 258160), (461, 188720), (560, 155357), (674, 129080), (922, 94360), (1348, 64540), (1685, 51632), (1844, 47180), (2305, 37744), (2359, 36880), (2696, 32270), (3227, 26960), (3370, 25816), (3688, 23590), (4610, 18872), (4718, 18440), (5392, 16135), (6454, 13480), (6740, 12908), (7376, 11795), (9220, 9436)]