20678784

素因数分解:

$2^7\times 3^1\times 7^3\times {\mathrm{157}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 64464000

約数和(自身を除く): 43785216

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 49, 56, 64, 84, 96, 98, 112, 128, 147, 157, 168, 192, 196, 224, 294, 314, 336, 343, 384, 392, 448, 471, 588, 628, 672, 686, 784, 896, 942, 1029, 1099, 1176, 1256, 1344, 1372, 1568, 1884, 2058, 2198, 2352, 2512, 2688, 2744, 3136, 3297, 3768, 4116, 4396, 4704, 5024, 5488, 6272, 6594, 7536, 7693, 8232, 8792, 9408, 10048, 10976, 13188, 15072, 15386, 16464, 17584, 18816, 20096, 21952, 23079, 26376, 30144, 30772, 32928, 35168, 43904, 46158, 52752, 53851, 60288, 61544, 65856, 70336, 92316, 105504, 107702, 123088, 131712, 140672, 161553, 184632, 211008, 215404, 246176, 323106, 369264, 422016, 430808, 492352, 646212, 738528, 861616, 984704, 1292424, 1477056, 1723232, 2584848, 2954112, 3446464, 5169696, 6892928, 10339392, 20678784]

約数ペア:

[(1, 20678784), (2, 10339392), (3, 6892928), (4, 5169696), (6, 3446464), (7, 2954112), (8, 2584848), (12, 1723232), (14, 1477056), (16, 1292424), (21, 984704), (24, 861616), (28, 738528), (32, 646212), (42, 492352), (48, 430808), (49, 422016), (56, 369264), (64, 323106), (84, 246176), (96, 215404), (98, 211008), (112, 184632), (128, 161553), (147, 140672), (157, 131712), (168, 123088), (192, 107702), (196, 105504), (224, 92316), (294, 70336), (314, 65856), (336, 61544), (343, 60288), (384, 53851), (392, 52752), (448, 46158), (471, 43904), (588, 35168), (628, 32928), (672, 30772), (686, 30144), (784, 26376), (896, 23079), (942, 21952), (1029, 20096), (1099, 18816), (1176, 17584), (1256, 16464), (1344, 15386), (1372, 15072), (1568, 13188), (1884, 10976), (2058, 10048), (2198, 9408), (2352, 8792), (2512, 8232), (2688, 7693), (2744, 7536), (3136, 6594), (3297, 6272), (3768, 5488), (4116, 5024), (4396, 4704)]