21131880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2287}}^1$

素因数の和:2319

約数の個数: 128

約数和(自身を含む): 79073280

約数和(自身を除く): 57941400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2287, 2310, 3080, 4574, 4620, 6861, 9148, 9240, 11435, 13722, 16009, 18296, 22870, 25157, 27444, 32018, 34305, 45740, 48027, 50314, 54888, 64036, 68610, 75471, 80045, 91480, 96054, 100628, 125785, 128072, 137220, 150942, 160090, 176099, 192108, 201256, 240135, 251570, 274440, 301884, 320180, 352198, 377355, 384216, 480270, 503140, 528297, 603768, 640360, 704396, 754710, 880495, 960540, 1006280, 1056594, 1408792, 1509420, 1760990, 1921080, 2113188, 2641485, 3018840, 3521980, 4226376, 5282970, 7043960, 10565940, 21131880]

約数ペア:

[(1, 21131880), (2, 10565940), (3, 7043960), (4, 5282970), (5, 4226376), (6, 3521980), (7, 3018840), (8, 2641485), (10, 2113188), (11, 1921080), (12, 1760990), (14, 1509420), (15, 1408792), (20, 1056594), (21, 1006280), (22, 960540), (24, 880495), (28, 754710), (30, 704396), (33, 640360), (35, 603768), (40, 528297), (42, 503140), (44, 480270), (55, 384216), (56, 377355), (60, 352198), (66, 320180), (70, 301884), (77, 274440), (84, 251570), (88, 240135), (105, 201256), (110, 192108), (120, 176099), (132, 160090), (140, 150942), (154, 137220), (165, 128072), (168, 125785), (210, 100628), (220, 96054), (231, 91480), (264, 80045), (280, 75471), (308, 68610), (330, 64036), (385, 54888), (420, 50314), (440, 48027), (462, 45740), (616, 34305), (660, 32018), (770, 27444), (840, 25157), (924, 22870), (1155, 18296), (1320, 16009), (1540, 13722), (1848, 11435), (2287, 9240), (2310, 9148), (3080, 6861), (4574, 4620)]