21651840

素因数分解:

$2^7\times 3^3\times 5^1\times 7^1\times {\mathrm{179}}^1$

素因数の和:214

約数の個数: 256

約数和(自身を含む): 88128000

約数和(自身を除く): 66476160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 128, 135, 140, 144, 160, 168, 179, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 336, 358, 360, 378, 384, 420, 432, 448, 480, 504, 537, 540, 560, 576, 630, 640, 672, 716, 720, 756, 840, 864, 895, 896, 945, 960, 1008, 1074, 1080, 1120, 1152, 1253, 1260, 1344, 1432, 1440, 1512, 1611, 1680, 1728, 1790, 1890, 1920, 2016, 2148, 2160, 2240, 2506, 2520, 2685, 2688, 2864, 2880, 3024, 3222, 3360, 3456, 3580, 3759, 3780, 4032, 4296, 4320, 4480, 4833, 5012, 5040, 5370, 5728, 5760, 6048, 6265, 6444, 6720, 7160, 7518, 7560, 8055, 8064, 8592, 8640, 9666, 10024, 10080, 10740, 11277, 11456, 12096, 12530, 12888, 13440, 14320, 15036, 15120, 16110, 17184, 17280, 18795, 19332, 20048, 20160, 21480, 22554, 22912, 24165, 24192, 25060, 25776, 28640, 30072, 30240, 32220, 33831, 34368, 37590, 38664, 40096, 40320, 42960, 45108, 48330, 50120, 51552, 56385, 57280, 60144, 60480, 64440, 67662, 68736, 75180, 77328, 80192, 85920, 90216, 96660, 100240, 103104, 112770, 114560, 120288, 120960, 128880, 135324, 150360, 154656, 160384, 169155, 171840, 180432, 193320, 200480, 206208, 225540, 240576, 257760, 270648, 300720, 309312, 338310, 343680, 360864, 386640, 400960, 451080, 481152, 515520, 541296, 601440, 618624, 676620, 721728, 773280, 801920, 902160, 1031040, 1082592, 1202880, 1353240, 1443456, 1546560, 1804320, 2165184, 2405760, 2706480, 3093120, 3608640, 4330368, 5412960, 7217280, 10825920, 21651840]

約数ペア:

[(1, 21651840), (2, 10825920), (3, 7217280), (4, 5412960), (5, 4330368), (6, 3608640), (7, 3093120), (8, 2706480), (9, 2405760), (10, 2165184), (12, 1804320), (14, 1546560), (15, 1443456), (16, 1353240), (18, 1202880), (20, 1082592), (21, 1031040), (24, 902160), (27, 801920), (28, 773280), (30, 721728), (32, 676620), (35, 618624), (36, 601440), (40, 541296), (42, 515520), (45, 481152), (48, 451080), (54, 400960), (56, 386640), (60, 360864), (63, 343680), (64, 338310), (70, 309312), (72, 300720), (80, 270648), (84, 257760), (90, 240576), (96, 225540), (105, 206208), (108, 200480), (112, 193320), (120, 180432), (126, 171840), (128, 169155), (135, 160384), (140, 154656), (144, 150360), (160, 135324), (168, 128880), (179, 120960), (180, 120288), (189, 114560), (192, 112770), (210, 103104), (216, 100240), (224, 96660), (240, 90216), (252, 85920), (270, 80192), (280, 77328), (288, 75180), (315, 68736), (320, 67662), (336, 64440), (358, 60480), (360, 60144), (378, 57280), (384, 56385), (420, 51552), (432, 50120), (448, 48330), (480, 45108), (504, 42960), (537, 40320), (540, 40096), (560, 38664), (576, 37590), (630, 34368), (640, 33831), (672, 32220), (716, 30240), (720, 30072), (756, 28640), (840, 25776), (864, 25060), (895, 24192), (896, 24165), (945, 22912), (960, 22554), (1008, 21480), (1074, 20160), (1080, 20048), (1120, 19332), (1152, 18795), (1253, 17280), (1260, 17184), (1344, 16110), (1432, 15120), (1440, 15036), (1512, 14320), (1611, 13440), (1680, 12888), (1728, 12530), (1790, 12096), (1890, 11456), (1920, 11277), (2016, 10740), (2148, 10080), (2160, 10024), (2240, 9666), (2506, 8640), (2520, 8592), (2685, 8064), (2688, 8055), (2864, 7560), (2880, 7518), (3024, 7160), (3222, 6720), (3360, 6444), (3456, 6265), (3580, 6048), (3759, 5760), (3780, 5728), (4032, 5370), (4296, 5040), (4320, 5012), (4480, 4833)]