21029760

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{1217}}^1$

素因数の和:1245

約数の個数: 128

約数和(自身を含む): 74541600

約数和(自身を除く): 53511840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 864, 960, 1080, 1152, 1217, 1440, 1728, 1920, 2160, 2434, 2880, 3456, 3651, 4320, 4868, 5760, 6085, 7302, 8640, 9736, 10953, 12170, 14604, 17280, 18255, 19472, 21906, 24340, 29208, 32859, 36510, 38944, 43812, 48680, 54765, 58416, 65718, 73020, 77888, 87624, 97360, 109530, 116832, 131436, 146040, 155776, 164295, 175248, 194720, 219060, 233664, 262872, 292080, 328590, 350496, 389440, 438120, 467328, 525744, 584160, 657180, 700992, 778880, 876240, 1051488, 1168320, 1314360, 1401984, 1752480, 2102976, 2336640, 2628720, 3504960, 4205952, 5257440, 7009920, 10514880, 21029760]

約数ペア:

[(1, 21029760), (2, 10514880), (3, 7009920), (4, 5257440), (5, 4205952), (6, 3504960), (8, 2628720), (9, 2336640), (10, 2102976), (12, 1752480), (15, 1401984), (16, 1314360), (18, 1168320), (20, 1051488), (24, 876240), (27, 778880), (30, 700992), (32, 657180), (36, 584160), (40, 525744), (45, 467328), (48, 438120), (54, 389440), (60, 350496), (64, 328590), (72, 292080), (80, 262872), (90, 233664), (96, 219060), (108, 194720), (120, 175248), (128, 164295), (135, 155776), (144, 146040), (160, 131436), (180, 116832), (192, 109530), (216, 97360), (240, 87624), (270, 77888), (288, 73020), (320, 65718), (360, 58416), (384, 54765), (432, 48680), (480, 43812), (540, 38944), (576, 36510), (640, 32859), (720, 29208), (864, 24340), (960, 21906), (1080, 19472), (1152, 18255), (1217, 17280), (1440, 14604), (1728, 12170), (1920, 10953), (2160, 9736), (2434, 8640), (2880, 7302), (3456, 6085), (3651, 5760), (4320, 4868)]