21755520

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{1259}}^1$

素因数の和:1287

約数の個数: 128

約数和(自身を含む): 77112000

約数和(自身を除く): 55356480

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, 1259, 1440, 1728, 1920, 2160, 2518, 2880, 3456, 3777, 4320, 5036, 5760, 6295, 7554, 8640, 10072, 11331, 12590, 15108, 17280, 18885, 20144, 22662, 25180, 30216, 33993, 37770, 40288, 45324, 50360, 56655, 60432, 67986, 75540, 80576, 90648, 100720, 113310, 120864, 135972, 151080, 161152, 169965, 181296, 201440, 226620, 241728, 271944, 302160, 339930, 362592, 402880, 453240, 483456, 543888, 604320, 679860, 725184, 805760, 906480, 1087776, 1208640, 1359720, 1450368, 1812960, 2175552, 2417280, 2719440, 3625920, 4351104, 5438880, 7251840, 10877760, 21755520]

約数ペア:

[(1, 21755520), (2, 10877760), (3, 7251840), (4, 5438880), (5, 4351104), (6, 3625920), (8, 2719440), (9, 2417280), (10, 2175552), (12, 1812960), (15, 1450368), (16, 1359720), (18, 1208640), (20, 1087776), (24, 906480), (27, 805760), (30, 725184), (32, 679860), (36, 604320), (40, 543888), (45, 483456), (48, 453240), (54, 402880), (60, 362592), (64, 339930), (72, 302160), (80, 271944), (90, 241728), (96, 226620), (108, 201440), (120, 181296), (128, 169965), (135, 161152), (144, 151080), (160, 135972), (180, 120864), (192, 113310), (216, 100720), (240, 90648), (270, 80576), (288, 75540), (320, 67986), (360, 60432), (384, 56655), (432, 50360), (480, 45324), (540, 40288), (576, 37770), (640, 33993), (720, 30216), (864, 25180), (960, 22662), (1080, 20144), (1152, 18885), (1259, 17280), (1440, 15108), (1728, 12590), (1920, 11331), (2160, 10072), (2518, 8640), (2880, 7554), (3456, 6295), (3777, 5760), (4320, 5036)]