87971840

素因数分解:

$2^{11}\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1$

素因数の和:120

約数の個数: 144

約数和(自身を含む): 235282320

約数和(自身を除く): 147310480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 71, 80, 88, 110, 121, 128, 142, 160, 176, 220, 242, 256, 284, 320, 352, 355, 440, 484, 512, 568, 605, 640, 704, 710, 781, 880, 968, 1024, 1136, 1210, 1280, 1408, 1420, 1562, 1760, 1936, 2048, 2272, 2420, 2560, 2816, 2840, 3124, 3520, 3872, 3905, 4544, 4840, 5120, 5632, 5680, 6248, 7040, 7744, 7810, 8591, 9088, 9680, 10240, 11264, 11360, 12496, 14080, 15488, 15620, 17182, 18176, 19360, 22528, 22720, 24992, 28160, 30976, 31240, 34364, 36352, 38720, 42955, 45440, 49984, 56320, 61952, 62480, 68728, 72704, 77440, 85910, 90880, 99968, 112640, 123904, 124960, 137456, 145408, 154880, 171820, 181760, 199936, 247808, 249920, 274912, 309760, 343640, 363520, 399872, 499840, 549824, 619520, 687280, 727040, 799744, 999680, 1099648, 1239040, 1374560, 1599488, 1999360, 2199296, 2749120, 3998720, 4398592, 5498240, 7997440, 8797184, 10996480, 17594368, 21992960, 43985920, 87971840]

約数ペア:

[(1, 87971840), (2, 43985920), (4, 21992960), (5, 17594368), (8, 10996480), (10, 8797184), (11, 7997440), (16, 5498240), (20, 4398592), (22, 3998720), (32, 2749120), (40, 2199296), (44, 1999360), (55, 1599488), (64, 1374560), (71, 1239040), (80, 1099648), (88, 999680), (110, 799744), (121, 727040), (128, 687280), (142, 619520), (160, 549824), (176, 499840), (220, 399872), (242, 363520), (256, 343640), (284, 309760), (320, 274912), (352, 249920), (355, 247808), (440, 199936), (484, 181760), (512, 171820), (568, 154880), (605, 145408), (640, 137456), (704, 124960), (710, 123904), (781, 112640), (880, 99968), (968, 90880), (1024, 85910), (1136, 77440), (1210, 72704), (1280, 68728), (1408, 62480), (1420, 61952), (1562, 56320), (1760, 49984), (1936, 45440), (2048, 42955), (2272, 38720), (2420, 36352), (2560, 34364), (2816, 31240), (2840, 30976), (3124, 28160), (3520, 24992), (3872, 22720), (3905, 22528), (4544, 19360), (4840, 18176), (5120, 17182), (5632, 15620), (5680, 15488), (6248, 14080), (7040, 12496), (7744, 11360), (7810, 11264), (8591, 10240), (9088, 9680)]