21713280

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:328

約数の個数: 128

約数和(自身を含む): 71089920

約数和(自身を除く): 49376640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 43, 48, 60, 64, 80, 86, 96, 120, 128, 129, 160, 172, 192, 215, 240, 258, 263, 320, 344, 384, 430, 480, 516, 526, 640, 645, 688, 789, 860, 960, 1032, 1052, 1290, 1315, 1376, 1578, 1720, 1920, 2064, 2104, 2580, 2630, 2752, 3156, 3440, 3945, 4128, 4208, 5160, 5260, 5504, 6312, 6880, 7890, 8256, 8416, 10320, 10520, 11309, 12624, 13760, 15780, 16512, 16832, 20640, 21040, 22618, 25248, 27520, 31560, 33664, 33927, 41280, 42080, 45236, 50496, 56545, 63120, 67854, 82560, 84160, 90472, 100992, 113090, 126240, 135708, 168320, 169635, 180944, 226180, 252480, 271416, 339270, 361888, 452360, 504960, 542832, 678540, 723776, 904720, 1085664, 1357080, 1447552, 1809440, 2171328, 2714160, 3618880, 4342656, 5428320, 7237760, 10856640, 21713280]

約数ペア:

[(1, 21713280), (2, 10856640), (3, 7237760), (4, 5428320), (5, 4342656), (6, 3618880), (8, 2714160), (10, 2171328), (12, 1809440), (15, 1447552), (16, 1357080), (20, 1085664), (24, 904720), (30, 723776), (32, 678540), (40, 542832), (43, 504960), (48, 452360), (60, 361888), (64, 339270), (80, 271416), (86, 252480), (96, 226180), (120, 180944), (128, 169635), (129, 168320), (160, 135708), (172, 126240), (192, 113090), (215, 100992), (240, 90472), (258, 84160), (263, 82560), (320, 67854), (344, 63120), (384, 56545), (430, 50496), (480, 45236), (516, 42080), (526, 41280), (640, 33927), (645, 33664), (688, 31560), (789, 27520), (860, 25248), (960, 22618), (1032, 21040), (1052, 20640), (1290, 16832), (1315, 16512), (1376, 15780), (1578, 13760), (1720, 12624), (1920, 11309), (2064, 10520), (2104, 10320), (2580, 8416), (2630, 8256), (2752, 7890), (3156, 6880), (3440, 6312), (3945, 5504), (4128, 5260), (4208, 5160)]