19871280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1$

素因数の和:236

約数の個数: 240

約数和(自身を含む): 78807456

約数和(自身を除く): 58936176

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 15, 16, 18, 20, 22, 24, 26, 30, 33, 36, 39, 40, 44, 45, 48, 52, 55, 60, 65, 66, 72, 78, 80, 88, 90, 99, 104, 110, 117, 120, 130, 132, 143, 144, 156, 165, 176, 180, 193, 195, 198, 208, 220, 234, 240, 260, 264, 286, 312, 330, 360, 386, 390, 396, 429, 440, 468, 495, 520, 528, 572, 579, 585, 624, 660, 715, 720, 772, 780, 792, 858, 880, 936, 965, 990, 1040, 1144, 1158, 1170, 1287, 1320, 1430, 1544, 1560, 1584, 1716, 1737, 1872, 1930, 1980, 2123, 2145, 2288, 2316, 2340, 2509, 2574, 2640, 2860, 2895, 3088, 3120, 3432, 3474, 3860, 3960, 4246, 4290, 4632, 4680, 5018, 5148, 5720, 5790, 6369, 6435, 6864, 6948, 7527, 7720, 7920, 8492, 8580, 8685, 9264, 9360, 10036, 10296, 10615, 11440, 11580, 12545, 12738, 12870, 13896, 15054, 15440, 16984, 17160, 17370, 19107, 20072, 20592, 21230, 22581, 23160, 25090, 25476, 25740, 27599, 27792, 30108, 31845, 33968, 34320, 34740, 37635, 38214, 40144, 42460, 45162, 46320, 50180, 50952, 51480, 55198, 60216, 63690, 69480, 75270, 76428, 82797, 84920, 90324, 95535, 100360, 101904, 102960, 110396, 112905, 120432, 127380, 137995, 138960, 150540, 152856, 165594, 169840, 180648, 191070, 200720, 220792, 225810, 248391, 254760, 275990, 301080, 305712, 331188, 361296, 382140, 413985, 441584, 451620, 496782, 509520, 551980, 602160, 662376, 764280, 827970, 903240, 993564, 1103960, 1241955, 1324752, 1528560, 1655940, 1806480, 1987128, 2207920, 2483910, 3311880, 3974256, 4967820, 6623760, 9935640, 19871280]

約数ペア:

[(1, 19871280), (2, 9935640), (3, 6623760), (4, 4967820), (5, 3974256), (6, 3311880), (8, 2483910), (9, 2207920), (10, 1987128), (11, 1806480), (12, 1655940), (13, 1528560), (15, 1324752), (16, 1241955), (18, 1103960), (20, 993564), (22, 903240), (24, 827970), (26, 764280), (30, 662376), (33, 602160), (36, 551980), (39, 509520), (40, 496782), (44, 451620), (45, 441584), (48, 413985), (52, 382140), (55, 361296), (60, 331188), (65, 305712), (66, 301080), (72, 275990), (78, 254760), (80, 248391), (88, 225810), (90, 220792), (99, 200720), (104, 191070), (110, 180648), (117, 169840), (120, 165594), (130, 152856), (132, 150540), (143, 138960), (144, 137995), (156, 127380), (165, 120432), (176, 112905), (180, 110396), (193, 102960), (195, 101904), (198, 100360), (208, 95535), (220, 90324), (234, 84920), (240, 82797), (260, 76428), (264, 75270), (286, 69480), (312, 63690), (330, 60216), (360, 55198), (386, 51480), (390, 50952), (396, 50180), (429, 46320), (440, 45162), (468, 42460), (495, 40144), (520, 38214), (528, 37635), (572, 34740), (579, 34320), (585, 33968), (624, 31845), (660, 30108), (715, 27792), (720, 27599), (772, 25740), (780, 25476), (792, 25090), (858, 23160), (880, 22581), (936, 21230), (965, 20592), (990, 20072), (1040, 19107), (1144, 17370), (1158, 17160), (1170, 16984), (1287, 15440), (1320, 15054), (1430, 13896), (1544, 12870), (1560, 12738), (1584, 12545), (1716, 11580), (1737, 11440), (1872, 10615), (1930, 10296), (1980, 10036), (2123, 9360), (2145, 9264), (2288, 8685), (2316, 8580), (2340, 8492), (2509, 7920), (2574, 7720), (2640, 7527), (2860, 6948), (2895, 6864), (3088, 6435), (3120, 6369), (3432, 5790), (3474, 5720), (3860, 5148), (3960, 5018), (4246, 4680), (4290, 4632)]