12920320

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{103}}^1$

素因数の和:140

約数の個数: 120

約数和(自身を含む): 36386064

約数和(自身を除く): 23465744

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, 1030, 1120, 1280, 1442, 1568, 1648, 1792, 1960, 2060, 2240, 2560, 2884, 3136, 3296, 3584, 3605, 3920, 4120, 4480, 5047, 5768, 6272, 6592, 7210, 7840, 8240, 8960, 10094, 11536, 12544, 13184, 14420, 15680, 16480, 17920, 20188, 23072, 25088, 25235, 26368, 28840, 31360, 32960, 40376, 46144, 50470, 52736, 57680, 62720, 65920, 80752, 92288, 100940, 115360, 125440, 131840, 161504, 184576, 201880, 230720, 263680, 323008, 369152, 403760, 461440, 646016, 807520, 922880, 1292032, 1615040, 1845760, 2584064, 3230080, 6460160, 12920320]

約数ペア:

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