81544960

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:526

約数の個数: 144

約数和(自身を含む): 235468800

約数和(自身を除く): 153923840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 128, 133, 140, 152, 160, 190, 224, 256, 266, 280, 304, 320, 380, 448, 479, 532, 560, 608, 640, 665, 760, 896, 958, 1064, 1120, 1216, 1280, 1330, 1520, 1792, 1916, 2128, 2240, 2395, 2432, 2660, 3040, 3353, 3832, 4256, 4480, 4790, 4864, 5320, 6080, 6706, 7664, 8512, 8960, 9101, 9580, 10640, 12160, 13412, 15328, 16765, 17024, 18202, 19160, 21280, 24320, 26824, 30656, 33530, 34048, 36404, 38320, 42560, 45505, 53648, 61312, 63707, 67060, 72808, 76640, 85120, 91010, 107296, 122624, 127414, 134120, 145616, 153280, 170240, 182020, 214592, 254828, 268240, 291232, 306560, 318535, 364040, 429184, 509656, 536480, 582464, 613120, 637070, 728080, 858368, 1019312, 1072960, 1164928, 1274140, 1456160, 2038624, 2145920, 2329856, 2548280, 2912320, 4077248, 4291840, 5096560, 5824640, 8154496, 10193120, 11649280, 16308992, 20386240, 40772480, 81544960]

約数ペア:

[(1, 81544960), (2, 40772480), (4, 20386240), (5, 16308992), (7, 11649280), (8, 10193120), (10, 8154496), (14, 5824640), (16, 5096560), (19, 4291840), (20, 4077248), (28, 2912320), (32, 2548280), (35, 2329856), (38, 2145920), (40, 2038624), (56, 1456160), (64, 1274140), (70, 1164928), (76, 1072960), (80, 1019312), (95, 858368), (112, 728080), (128, 637070), (133, 613120), (140, 582464), (152, 536480), (160, 509656), (190, 429184), (224, 364040), (256, 318535), (266, 306560), (280, 291232), (304, 268240), (320, 254828), (380, 214592), (448, 182020), (479, 170240), (532, 153280), (560, 145616), (608, 134120), (640, 127414), (665, 122624), (760, 107296), (896, 91010), (958, 85120), (1064, 76640), (1120, 72808), (1216, 67060), (1280, 63707), (1330, 61312), (1520, 53648), (1792, 45505), (1916, 42560), (2128, 38320), (2240, 36404), (2395, 34048), (2432, 33530), (2660, 30656), (3040, 26824), (3353, 24320), (3832, 21280), (4256, 19160), (4480, 18202), (4790, 17024), (4864, 16765), (5320, 15328), (6080, 13412), (6706, 12160), (7664, 10640), (8512, 9580), (8960, 9101)]