217544320

素因数分解:

$2^7\times 5^1\times 7^3\times {\mathrm{991}}^1$

素因数の和:1031

約数の個数: 128

約数和(自身を含む): 607104000

約数和(自身を除く): 389559680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 280, 320, 343, 392, 448, 490, 560, 640, 686, 784, 896, 980, 991, 1120, 1372, 1568, 1715, 1960, 1982, 2240, 2744, 3136, 3430, 3920, 3964, 4480, 4955, 5488, 6272, 6860, 6937, 7840, 7928, 9910, 10976, 13720, 13874, 15680, 15856, 19820, 21952, 27440, 27748, 31360, 31712, 34685, 39640, 43904, 48559, 54880, 55496, 63424, 69370, 79280, 97118, 109760, 110992, 126848, 138740, 158560, 194236, 219520, 221984, 242795, 277480, 317120, 339913, 388472, 443968, 485590, 554960, 634240, 679826, 776944, 887936, 971180, 1109920, 1359652, 1553888, 1699565, 1942360, 2219840, 2719304, 3107776, 3399130, 3884720, 4439680, 5438608, 6215552, 6798260, 7769440, 10877216, 13596520, 15538880, 21754432, 27193040, 31077760, 43508864, 54386080, 108772160, 217544320]

約数ペア:

[(1, 217544320), (2, 108772160), (4, 54386080), (5, 43508864), (7, 31077760), (8, 27193040), (10, 21754432), (14, 15538880), (16, 13596520), (20, 10877216), (28, 7769440), (32, 6798260), (35, 6215552), (40, 5438608), (49, 4439680), (56, 3884720), (64, 3399130), (70, 3107776), (80, 2719304), (98, 2219840), (112, 1942360), (128, 1699565), (140, 1553888), (160, 1359652), (196, 1109920), (224, 971180), (245, 887936), (280, 776944), (320, 679826), (343, 634240), (392, 554960), (448, 485590), (490, 443968), (560, 388472), (640, 339913), (686, 317120), (784, 277480), (896, 242795), (980, 221984), (991, 219520), (1120, 194236), (1372, 158560), (1568, 138740), (1715, 126848), (1960, 110992), (1982, 109760), (2240, 97118), (2744, 79280), (3136, 69370), (3430, 63424), (3920, 55496), (3964, 54880), (4480, 48559), (4955, 43904), (5488, 39640), (6272, 34685), (6860, 31712), (6937, 31360), (7840, 27748), (7928, 27440), (9910, 21952), (10976, 19820), (13720, 15856), (13874, 15680)]