20427120

素因数分解:

$2^4\times 3^3\times 5^1\times 7^2\times {\mathrm{193}}^1$

素因数の和:229

約数の個数: 240

約数和(自身を含む): 82271520

約数和(自身を除く): 61844400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 49, 54, 56, 60, 63, 70, 72, 80, 84, 90, 98, 105, 108, 112, 120, 126, 135, 140, 144, 147, 168, 180, 189, 193, 196, 210, 216, 240, 245, 252, 270, 280, 294, 315, 336, 360, 378, 386, 392, 420, 432, 441, 490, 504, 540, 560, 579, 588, 630, 720, 735, 756, 772, 784, 840, 882, 945, 965, 980, 1008, 1080, 1158, 1176, 1260, 1323, 1351, 1470, 1512, 1544, 1680, 1737, 1764, 1890, 1930, 1960, 2160, 2205, 2316, 2352, 2520, 2646, 2702, 2895, 2940, 3024, 3088, 3474, 3528, 3780, 3860, 3920, 4053, 4410, 4632, 5040, 5211, 5292, 5404, 5790, 5880, 6615, 6755, 6948, 7056, 7560, 7720, 8106, 8685, 8820, 9264, 9457, 10422, 10584, 10808, 11580, 11760, 12159, 13230, 13510, 13896, 15120, 15440, 16212, 17370, 17640, 18914, 20265, 20844, 21168, 21616, 23160, 24318, 26055, 26460, 27020, 27792, 28371, 32424, 34740, 35280, 36477, 37828, 40530, 41688, 46320, 47285, 48636, 52110, 52920, 54040, 56742, 60795, 64848, 69480, 72954, 75656, 81060, 83376, 85113, 94570, 97272, 104220, 105840, 108080, 113484, 121590, 138960, 141855, 145908, 151312, 162120, 170226, 182385, 189140, 194544, 208440, 226968, 243180, 255339, 283710, 291816, 324240, 340452, 364770, 378280, 416880, 425565, 453936, 486360, 510678, 567420, 583632, 680904, 729540, 756560, 851130, 972720, 1021356, 1134840, 1276695, 1361808, 1459080, 1702260, 2042712, 2269680, 2553390, 2918160, 3404520, 4085424, 5106780, 6809040, 10213560, 20427120]

約数ペア:

[(1, 20427120), (2, 10213560), (3, 6809040), (4, 5106780), (5, 4085424), (6, 3404520), (7, 2918160), (8, 2553390), (9, 2269680), (10, 2042712), (12, 1702260), (14, 1459080), (15, 1361808), (16, 1276695), (18, 1134840), (20, 1021356), (21, 972720), (24, 851130), (27, 756560), (28, 729540), (30, 680904), (35, 583632), (36, 567420), (40, 510678), (42, 486360), (45, 453936), (48, 425565), (49, 416880), (54, 378280), (56, 364770), (60, 340452), (63, 324240), (70, 291816), (72, 283710), (80, 255339), (84, 243180), (90, 226968), (98, 208440), (105, 194544), (108, 189140), (112, 182385), (120, 170226), (126, 162120), (135, 151312), (140, 145908), (144, 141855), (147, 138960), (168, 121590), (180, 113484), (189, 108080), (193, 105840), (196, 104220), (210, 97272), (216, 94570), (240, 85113), (245, 83376), (252, 81060), (270, 75656), (280, 72954), (294, 69480), (315, 64848), (336, 60795), (360, 56742), (378, 54040), (386, 52920), (392, 52110), (420, 48636), (432, 47285), (441, 46320), (490, 41688), (504, 40530), (540, 37828), (560, 36477), (579, 35280), (588, 34740), (630, 32424), (720, 28371), (735, 27792), (756, 27020), (772, 26460), (784, 26055), (840, 24318), (882, 23160), (945, 21616), (965, 21168), (980, 20844), (1008, 20265), (1080, 18914), (1158, 17640), (1176, 17370), (1260, 16212), (1323, 15440), (1351, 15120), (1470, 13896), (1512, 13510), (1544, 13230), (1680, 12159), (1737, 11760), (1764, 11580), (1890, 10808), (1930, 10584), (1960, 10422), (2160, 9457), (2205, 9264), (2316, 8820), (2352, 8685), (2520, 8106), (2646, 7720), (2702, 7560), (2895, 7056), (2940, 6948), (3024, 6755), (3088, 6615), (3474, 5880), (3528, 5790), (3780, 5404), (3860, 5292), (3920, 5211), (4053, 5040), (4410, 4632)]