989755520

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{353}}^1$

素因数の和:722

約数の個数: 128

約数和(自身を含む): 2562945840

約数和(自身を除く): 1573190320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 337, 353, 416, 520, 640, 674, 706, 832, 1040, 1348, 1412, 1664, 1685, 1765, 2080, 2696, 2824, 3370, 3530, 4160, 4381, 4589, 5392, 5648, 6740, 7060, 8320, 8762, 9178, 10784, 11296, 13480, 14120, 17524, 18356, 21568, 21905, 22592, 22945, 26960, 28240, 35048, 36712, 43136, 43810, 45184, 45890, 53920, 56480, 70096, 73424, 87620, 91780, 107840, 112960, 118961, 140192, 146848, 175240, 183560, 215680, 225920, 237922, 280384, 293696, 350480, 367120, 475844, 560768, 587392, 594805, 700960, 734240, 951688, 1189610, 1401920, 1468480, 1546493, 1903376, 2379220, 2803840, 2936960, 3092986, 3806752, 4758440, 6185972, 7613504, 7732465, 9516880, 12371944, 15227008, 15464930, 19033760, 24743888, 30929860, 38067520, 49487776, 61859720, 76135040, 98975552, 123719440, 197951104, 247438880, 494877760, 989755520]

約数ペア:

[(1, 989755520), (2, 494877760), (4, 247438880), (5, 197951104), (8, 123719440), (10, 98975552), (13, 76135040), (16, 61859720), (20, 49487776), (26, 38067520), (32, 30929860), (40, 24743888), (52, 19033760), (64, 15464930), (65, 15227008), (80, 12371944), (104, 9516880), (128, 7732465), (130, 7613504), (160, 6185972), (208, 4758440), (260, 3806752), (320, 3092986), (337, 2936960), (353, 2803840), (416, 2379220), (520, 1903376), (640, 1546493), (674, 1468480), (706, 1401920), (832, 1189610), (1040, 951688), (1348, 734240), (1412, 700960), (1664, 594805), (1685, 587392), (1765, 560768), (2080, 475844), (2696, 367120), (2824, 350480), (3370, 293696), (3530, 280384), (4160, 237922), (4381, 225920), (4589, 215680), (5392, 183560), (5648, 175240), (6740, 146848), (7060, 140192), (8320, 118961), (8762, 112960), (9178, 107840), (10784, 91780), (11296, 87620), (13480, 73424), (14120, 70096), (17524, 56480), (18356, 53920), (21568, 45890), (21905, 45184), (22592, 43810), (22945, 43136), (26960, 36712), (28240, 35048)]