21517440

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{1601}}^1$

素因数の和:1630

約数の個数: 128

約数和(自身を含む): 78433920

約数和(自身を除く): 56916480

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, 1601, 1680, 1920, 2240, 2688, 3202, 3360, 4480, 4803, 6404, 6720, 8005, 9606, 11207, 12808, 13440, 16010, 19212, 22414, 24015, 25616, 32020, 33621, 38424, 44828, 48030, 51232, 56035, 64040, 67242, 76848, 89656, 96060, 102464, 112070, 128080, 134484, 153696, 168105, 179312, 192120, 204928, 224140, 256160, 268968, 307392, 336210, 358624, 384240, 448280, 512320, 537936, 614784, 672420, 717248, 768480, 896560, 1024640, 1075872, 1344840, 1434496, 1536960, 1793120, 2151744, 2689680, 3073920, 3586240, 4303488, 5379360, 7172480, 10758720, 21517440]

約数ペア:

[(1, 21517440), (2, 10758720), (3, 7172480), (4, 5379360), (5, 4303488), (6, 3586240), (7, 3073920), (8, 2689680), (10, 2151744), (12, 1793120), (14, 1536960), (15, 1434496), (16, 1344840), (20, 1075872), (21, 1024640), (24, 896560), (28, 768480), (30, 717248), (32, 672420), (35, 614784), (40, 537936), (42, 512320), (48, 448280), (56, 384240), (60, 358624), (64, 336210), (70, 307392), (80, 268968), (84, 256160), (96, 224140), (105, 204928), (112, 192120), (120, 179312), (128, 168105), (140, 153696), (160, 134484), (168, 128080), (192, 112070), (210, 102464), (224, 96060), (240, 89656), (280, 76848), (320, 67242), (336, 64040), (384, 56035), (420, 51232), (448, 48030), (480, 44828), (560, 38424), (640, 33621), (672, 32020), (840, 25616), (896, 24015), (960, 22414), (1120, 19212), (1344, 16010), (1601, 13440), (1680, 12808), (1920, 11207), (2240, 9606), (2688, 8005), (3202, 6720), (3360, 6404), (4480, 4803)]