215568640

素因数分解:

$2^8\times 5^1\times 7^3\times {\mathrm{491}}^1$

素因数の和:533

約数の個数: 144

約数和(自身を含む): 603388800

約数和(自身を除く): 387820160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 343, 392, 448, 490, 491, 560, 640, 686, 784, 896, 980, 982, 1120, 1280, 1372, 1568, 1715, 1792, 1960, 1964, 2240, 2455, 2744, 3136, 3430, 3437, 3920, 3928, 4480, 4910, 5488, 6272, 6860, 6874, 7840, 7856, 8960, 9820, 10976, 12544, 13720, 13748, 15680, 15712, 17185, 19640, 21952, 24059, 27440, 27496, 31360, 31424, 34370, 39280, 43904, 48118, 54880, 54992, 62720, 62848, 68740, 78560, 87808, 96236, 109760, 109984, 120295, 125696, 137480, 157120, 168413, 192472, 219520, 219968, 240590, 274960, 314240, 336826, 384944, 439040, 439936, 481180, 549920, 628480, 673652, 769888, 842065, 879872, 962360, 1099840, 1347304, 1539776, 1684130, 1924720, 2199680, 2694608, 3079552, 3368260, 3849440, 4399360, 5389216, 6159104, 6736520, 7698880, 10778432, 13473040, 15397760, 21556864, 26946080, 30795520, 43113728, 53892160, 107784320, 215568640]

約数ペア:

[(1, 215568640), (2, 107784320), (4, 53892160), (5, 43113728), (7, 30795520), (8, 26946080), (10, 21556864), (14, 15397760), (16, 13473040), (20, 10778432), (28, 7698880), (32, 6736520), (35, 6159104), (40, 5389216), (49, 4399360), (56, 3849440), (64, 3368260), (70, 3079552), (80, 2694608), (98, 2199680), (112, 1924720), (128, 1684130), (140, 1539776), (160, 1347304), (196, 1099840), (224, 962360), (245, 879872), (256, 842065), (280, 769888), (320, 673652), (343, 628480), (392, 549920), (448, 481180), (490, 439936), (491, 439040), (560, 384944), (640, 336826), (686, 314240), (784, 274960), (896, 240590), (980, 219968), (982, 219520), (1120, 192472), (1280, 168413), (1372, 157120), (1568, 137480), (1715, 125696), (1792, 120295), (1960, 109984), (1964, 109760), (2240, 96236), (2455, 87808), (2744, 78560), (3136, 68740), (3430, 62848), (3437, 62720), (3920, 54992), (3928, 54880), (4480, 48118), (4910, 43904), (5488, 39280), (6272, 34370), (6860, 31424), (6874, 31360), (7840, 27496), (7856, 27440), (8960, 24059), (9820, 21952), (10976, 19640), (12544, 17185), (13720, 15712), (13748, 15680)]