19904640

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{1481}}^1$

素因数の和:1510

約数の個数: 128

約数和(自身を含む): 72558720

約数和(自身を除く): 52654080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 840, 896, 960, 1120, 1344, 1481, 1680, 1920, 2240, 2688, 2962, 3360, 4443, 4480, 5924, 6720, 7405, 8886, 10367, 11848, 13440, 14810, 17772, 20734, 22215, 23696, 29620, 31101, 35544, 41468, 44430, 47392, 51835, 59240, 62202, 71088, 82936, 88860, 94784, 103670, 118480, 124404, 142176, 155505, 165872, 177720, 189568, 207340, 236960, 248808, 284352, 311010, 331744, 355440, 414680, 473920, 497616, 568704, 622020, 663488, 710880, 829360, 947840, 995232, 1244040, 1326976, 1421760, 1658720, 1990464, 2488080, 2843520, 3317440, 3980928, 4976160, 6634880, 9952320, 19904640]

約数ペア:

[(1, 19904640), (2, 9952320), (3, 6634880), (4, 4976160), (5, 3980928), (6, 3317440), (7, 2843520), (8, 2488080), (10, 1990464), (12, 1658720), (14, 1421760), (15, 1326976), (16, 1244040), (20, 995232), (21, 947840), (24, 829360), (28, 710880), (30, 663488), (32, 622020), (35, 568704), (40, 497616), (42, 473920), (48, 414680), (56, 355440), (60, 331744), (64, 311010), (70, 284352), (80, 248808), (84, 236960), (96, 207340), (105, 189568), (112, 177720), (120, 165872), (128, 155505), (140, 142176), (160, 124404), (168, 118480), (192, 103670), (210, 94784), (224, 88860), (240, 82936), (280, 71088), (320, 62202), (336, 59240), (384, 51835), (420, 47392), (448, 44430), (480, 41468), (560, 35544), (640, 31101), (672, 29620), (840, 23696), (896, 22215), (960, 20734), (1120, 17772), (1344, 14810), (1481, 13440), (1680, 11848), (1920, 10367), (2240, 8886), (2688, 7405), (2962, 6720), (3360, 5924), (4443, 4480)]