217763840

素因数分解:

$2^{12}\times 5^1\times 7^3\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 208

約数和(自身を含む): 629068800

約数和(自身を除く): 411304960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 64, 70, 80, 98, 112, 124, 128, 140, 155, 160, 196, 217, 224, 245, 248, 256, 280, 310, 320, 343, 392, 434, 448, 490, 496, 512, 560, 620, 640, 686, 784, 868, 896, 980, 992, 1024, 1085, 1120, 1240, 1280, 1372, 1519, 1568, 1715, 1736, 1792, 1960, 1984, 2048, 2170, 2240, 2480, 2560, 2744, 3038, 3136, 3430, 3472, 3584, 3920, 3968, 4096, 4340, 4480, 4960, 5120, 5488, 6076, 6272, 6860, 6944, 7168, 7595, 7840, 7936, 8680, 8960, 9920, 10240, 10633, 10976, 12152, 12544, 13720, 13888, 14336, 15190, 15680, 15872, 17360, 17920, 19840, 20480, 21266, 21952, 24304, 25088, 27440, 27776, 28672, 30380, 31360, 31744, 34720, 35840, 39680, 42532, 43904, 48608, 50176, 53165, 54880, 55552, 60760, 62720, 63488, 69440, 71680, 79360, 85064, 87808, 97216, 100352, 106330, 109760, 111104, 121520, 125440, 126976, 138880, 143360, 158720, 170128, 175616, 194432, 200704, 212660, 219520, 222208, 243040, 250880, 277760, 317440, 340256, 351232, 388864, 425320, 439040, 444416, 486080, 501760, 555520, 634880, 680512, 702464, 777728, 850640, 878080, 888832, 972160, 1003520, 1111040, 1361024, 1404928, 1555456, 1701280, 1756160, 1944320, 2222080, 2722048, 3110912, 3402560, 3512320, 3888640, 4444160, 5444096, 6221824, 6805120, 7024640, 7777280, 10888192, 13610240, 15554560, 21776384, 27220480, 31109120, 43552768, 54440960, 108881920, 217763840]

約数ペア:

[(1, 217763840), (2, 108881920), (4, 54440960), (5, 43552768), (7, 31109120), (8, 27220480), (10, 21776384), (14, 15554560), (16, 13610240), (20, 10888192), (28, 7777280), (31, 7024640), (32, 6805120), (35, 6221824), (40, 5444096), (49, 4444160), (56, 3888640), (62, 3512320), (64, 3402560), (70, 3110912), (80, 2722048), (98, 2222080), (112, 1944320), (124, 1756160), (128, 1701280), (140, 1555456), (155, 1404928), (160, 1361024), (196, 1111040), (217, 1003520), (224, 972160), (245, 888832), (248, 878080), (256, 850640), (280, 777728), (310, 702464), (320, 680512), (343, 634880), (392, 555520), (434, 501760), (448, 486080), (490, 444416), (496, 439040), (512, 425320), (560, 388864), (620, 351232), (640, 340256), (686, 317440), (784, 277760), (868, 250880), (896, 243040), (980, 222208), (992, 219520), (1024, 212660), (1085, 200704), (1120, 194432), (1240, 175616), (1280, 170128), (1372, 158720), (1519, 143360), (1568, 138880), (1715, 126976), (1736, 125440), (1792, 121520), (1960, 111104), (1984, 109760), (2048, 106330), (2170, 100352), (2240, 97216), (2480, 87808), (2560, 85064), (2744, 79360), (3038, 71680), (3136, 69440), (3430, 63488), (3472, 62720), (3584, 60760), (3920, 55552), (3968, 54880), (4096, 53165), (4340, 50176), (4480, 48608), (4960, 43904), (5120, 42532), (5488, 39680), (6076, 35840), (6272, 34720), (6860, 31744), (6944, 31360), (7168, 30380), (7595, 28672), (7840, 27776), (7936, 27440), (8680, 25088), (8960, 24304), (9920, 21952), (10240, 21266), (10633, 20480), (10976, 19840), (12152, 17920), (12544, 17360), (13720, 15872), (13888, 15680), (14336, 15190)]