80614400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:144

約数の個数: 132

約数和(自身を含む): 207123648

約数和(自身を除く): 126509248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 47, 50, 64, 67, 80, 94, 100, 128, 134, 160, 188, 200, 235, 256, 268, 320, 335, 376, 400, 470, 512, 536, 640, 670, 752, 800, 940, 1024, 1072, 1175, 1280, 1340, 1504, 1600, 1675, 1880, 2144, 2350, 2560, 2680, 3008, 3149, 3200, 3350, 3760, 4288, 4700, 5120, 5360, 6016, 6298, 6400, 6700, 7520, 8576, 9400, 10720, 12032, 12596, 12800, 13400, 15040, 15745, 17152, 18800, 21440, 24064, 25192, 25600, 26800, 30080, 31490, 34304, 37600, 42880, 48128, 50384, 53600, 60160, 62980, 68608, 75200, 78725, 85760, 100768, 107200, 120320, 125960, 150400, 157450, 171520, 201536, 214400, 240640, 251920, 300800, 314900, 343040, 403072, 428800, 503840, 601600, 629800, 806144, 857600, 1007680, 1203200, 1259600, 1612288, 1715200, 2015360, 2519200, 3224576, 4030720, 5038400, 8061440, 10076800, 16122880, 20153600, 40307200, 80614400]

約数ペア:

[(1, 80614400), (2, 40307200), (4, 20153600), (5, 16122880), (8, 10076800), (10, 8061440), (16, 5038400), (20, 4030720), (25, 3224576), (32, 2519200), (40, 2015360), (47, 1715200), (50, 1612288), (64, 1259600), (67, 1203200), (80, 1007680), (94, 857600), (100, 806144), (128, 629800), (134, 601600), (160, 503840), (188, 428800), (200, 403072), (235, 343040), (256, 314900), (268, 300800), (320, 251920), (335, 240640), (376, 214400), (400, 201536), (470, 171520), (512, 157450), (536, 150400), (640, 125960), (670, 120320), (752, 107200), (800, 100768), (940, 85760), (1024, 78725), (1072, 75200), (1175, 68608), (1280, 62980), (1340, 60160), (1504, 53600), (1600, 50384), (1675, 48128), (1880, 42880), (2144, 37600), (2350, 34304), (2560, 31490), (2680, 30080), (3008, 26800), (3149, 25600), (3200, 25192), (3350, 24064), (3760, 21440), (4288, 18800), (4700, 17152), (5120, 15745), (5360, 15040), (6016, 13400), (6298, 12800), (6400, 12596), (6700, 12032), (7520, 10720), (8576, 9400)]