51681280

素因数分解:

$2^{11}\times 5^1\times 7^2\times {\mathrm{103}}^1$

素因数の和:144

約数の個数: 144

約数和(自身を含む): 145650960

約数和(自身を除く): 93969680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 103, 112, 128, 140, 160, 196, 206, 224, 245, 256, 280, 320, 392, 412, 448, 490, 512, 515, 560, 640, 721, 784, 824, 896, 980, 1024, 1030, 1120, 1280, 1442, 1568, 1648, 1792, 1960, 2048, 2060, 2240, 2560, 2884, 3136, 3296, 3584, 3605, 3920, 4120, 4480, 5047, 5120, 5768, 6272, 6592, 7168, 7210, 7840, 8240, 8960, 10094, 10240, 11536, 12544, 13184, 14336, 14420, 15680, 16480, 17920, 20188, 23072, 25088, 25235, 26368, 28840, 31360, 32960, 35840, 40376, 46144, 50176, 50470, 52736, 57680, 62720, 65920, 71680, 80752, 92288, 100352, 100940, 105472, 115360, 125440, 131840, 161504, 184576, 201880, 210944, 230720, 250880, 263680, 323008, 369152, 403760, 461440, 501760, 527360, 646016, 738304, 807520, 922880, 1054720, 1292032, 1476608, 1615040, 1845760, 2584064, 3230080, 3691520, 5168128, 6460160, 7383040, 10336256, 12920320, 25840640, 51681280]

約数ペア:

[(1, 51681280), (2, 25840640), (4, 12920320), (5, 10336256), (7, 7383040), (8, 6460160), (10, 5168128), (14, 3691520), (16, 3230080), (20, 2584064), (28, 1845760), (32, 1615040), (35, 1476608), (40, 1292032), (49, 1054720), (56, 922880), (64, 807520), (70, 738304), (80, 646016), (98, 527360), (103, 501760), (112, 461440), (128, 403760), (140, 369152), (160, 323008), (196, 263680), (206, 250880), (224, 230720), (245, 210944), (256, 201880), (280, 184576), (320, 161504), (392, 131840), (412, 125440), (448, 115360), (490, 105472), (512, 100940), (515, 100352), (560, 92288), (640, 80752), (721, 71680), (784, 65920), (824, 62720), (896, 57680), (980, 52736), (1024, 50470), (1030, 50176), (1120, 46144), (1280, 40376), (1442, 35840), (1568, 32960), (1648, 31360), (1792, 28840), (1960, 26368), (2048, 25235), (2060, 25088), (2240, 23072), (2560, 20188), (2884, 17920), (3136, 16480), (3296, 15680), (3584, 14420), (3605, 14336), (3920, 13184), (4120, 12544), (4480, 11536), (5047, 10240), (5120, 10094), (5768, 8960), (6272, 8240), (6592, 7840), (7168, 7210)]