20519520

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:253

約数の個数: 192

約数和(自身を含む): 76640256

約数和(自身を除く): 56120736

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 96, 105, 112, 120, 124, 140, 155, 160, 168, 186, 197, 210, 217, 224, 240, 248, 280, 310, 336, 372, 394, 420, 434, 465, 480, 496, 560, 591, 620, 651, 672, 744, 788, 840, 868, 930, 985, 992, 1085, 1120, 1182, 1240, 1302, 1379, 1488, 1576, 1680, 1736, 1860, 1970, 2170, 2364, 2480, 2604, 2758, 2955, 2976, 3152, 3255, 3360, 3472, 3720, 3940, 4137, 4340, 4728, 4960, 5208, 5516, 5910, 6107, 6304, 6510, 6895, 6944, 7440, 7880, 8274, 8680, 9456, 10416, 11032, 11820, 12214, 13020, 13790, 14880, 15760, 16548, 17360, 18321, 18912, 20685, 20832, 22064, 23640, 24428, 26040, 27580, 30535, 31520, 33096, 34720, 36642, 41370, 42749, 44128, 47280, 48856, 52080, 55160, 61070, 66192, 73284, 82740, 85498, 91605, 94560, 97712, 104160, 110320, 122140, 128247, 132384, 146568, 165480, 170996, 183210, 195424, 213745, 220640, 244280, 256494, 293136, 330960, 341992, 366420, 427490, 488560, 512988, 586272, 641235, 661920, 683984, 732840, 854980, 977120, 1025976, 1282470, 1367968, 1465680, 1709960, 2051952, 2564940, 2931360, 3419920, 4103904, 5129880, 6839840, 10259760, 20519520]

約数ペア:

[(1, 20519520), (2, 10259760), (3, 6839840), (4, 5129880), (5, 4103904), (6, 3419920), (7, 2931360), (8, 2564940), (10, 2051952), (12, 1709960), (14, 1465680), (15, 1367968), (16, 1282470), (20, 1025976), (21, 977120), (24, 854980), (28, 732840), (30, 683984), (31, 661920), (32, 641235), (35, 586272), (40, 512988), (42, 488560), (48, 427490), (56, 366420), (60, 341992), (62, 330960), (70, 293136), (80, 256494), (84, 244280), (93, 220640), (96, 213745), (105, 195424), (112, 183210), (120, 170996), (124, 165480), (140, 146568), (155, 132384), (160, 128247), (168, 122140), (186, 110320), (197, 104160), (210, 97712), (217, 94560), (224, 91605), (240, 85498), (248, 82740), (280, 73284), (310, 66192), (336, 61070), (372, 55160), (394, 52080), (420, 48856), (434, 47280), (465, 44128), (480, 42749), (496, 41370), (560, 36642), (591, 34720), (620, 33096), (651, 31520), (672, 30535), (744, 27580), (788, 26040), (840, 24428), (868, 23640), (930, 22064), (985, 20832), (992, 20685), (1085, 18912), (1120, 18321), (1182, 17360), (1240, 16548), (1302, 15760), (1379, 14880), (1488, 13790), (1576, 13020), (1680, 12214), (1736, 11820), (1860, 11032), (1970, 10416), (2170, 9456), (2364, 8680), (2480, 8274), (2604, 7880), (2758, 7440), (2955, 6944), (2976, 6895), (3152, 6510), (3255, 6304), (3360, 6107), (3472, 5910), (3720, 5516), (3940, 5208), (4137, 4960), (4340, 4728)]