21154560

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{787}}^1$

素因数の和:818

約数の個数: 144

約数和(自身を含む): 77312256

約数和(自身を除く): 56157696

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, 256, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 768, 787, 840, 896, 960, 1120, 1280, 1344, 1574, 1680, 1792, 1920, 2240, 2361, 2688, 3148, 3360, 3840, 3935, 4480, 4722, 5376, 5509, 6296, 6720, 7870, 8960, 9444, 11018, 11805, 12592, 13440, 15740, 16527, 18888, 22036, 23610, 25184, 26880, 27545, 31480, 33054, 37776, 44072, 47220, 50368, 55090, 62960, 66108, 75552, 82635, 88144, 94440, 100736, 110180, 125920, 132216, 151104, 165270, 176288, 188880, 201472, 220360, 251840, 264432, 302208, 330540, 352576, 377760, 440720, 503680, 528864, 604416, 661080, 705152, 755520, 881440, 1007360, 1057728, 1322160, 1410304, 1511040, 1762880, 2115456, 2644320, 3022080, 3525760, 4230912, 5288640, 7051520, 10577280, 21154560]

約数ペア:

[(1, 21154560), (2, 10577280), (3, 7051520), (4, 5288640), (5, 4230912), (6, 3525760), (7, 3022080), (8, 2644320), (10, 2115456), (12, 1762880), (14, 1511040), (15, 1410304), (16, 1322160), (20, 1057728), (21, 1007360), (24, 881440), (28, 755520), (30, 705152), (32, 661080), (35, 604416), (40, 528864), (42, 503680), (48, 440720), (56, 377760), (60, 352576), (64, 330540), (70, 302208), (80, 264432), (84, 251840), (96, 220360), (105, 201472), (112, 188880), (120, 176288), (128, 165270), (140, 151104), (160, 132216), (168, 125920), (192, 110180), (210, 100736), (224, 94440), (240, 88144), (256, 82635), (280, 75552), (320, 66108), (336, 62960), (384, 55090), (420, 50368), (448, 47220), (480, 44072), (560, 37776), (640, 33054), (672, 31480), (768, 27545), (787, 26880), (840, 25184), (896, 23610), (960, 22036), (1120, 18888), (1280, 16527), (1344, 15740), (1574, 13440), (1680, 12592), (1792, 11805), (1920, 11018), (2240, 9444), (2361, 8960), (2688, 7870), (3148, 6720), (3360, 6296), (3840, 5509), (3935, 5376), (4480, 4722)]