28720440

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:187

約数の個数: 256

約数和(自身を含む): 114048000

約数和(自身を除く): 85327560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 29, 30, 35, 36, 40, 42, 45, 54, 56, 58, 60, 63, 70, 72, 84, 87, 90, 105, 108, 116, 120, 126, 131, 135, 140, 145, 168, 174, 180, 189, 203, 210, 216, 232, 252, 261, 262, 270, 280, 290, 315, 348, 360, 378, 393, 406, 420, 435, 504, 522, 524, 540, 580, 609, 630, 655, 696, 756, 783, 786, 812, 840, 870, 917, 945, 1015, 1044, 1048, 1080, 1160, 1179, 1218, 1260, 1305, 1310, 1512, 1566, 1572, 1624, 1740, 1827, 1834, 1890, 1965, 2030, 2088, 2358, 2436, 2520, 2610, 2620, 2751, 3045, 3132, 3144, 3480, 3537, 3654, 3668, 3780, 3799, 3915, 3930, 4060, 4585, 4716, 4872, 5220, 5240, 5481, 5502, 5895, 6090, 6264, 7074, 7308, 7336, 7560, 7598, 7830, 7860, 8120, 8253, 9135, 9170, 9432, 10440, 10962, 11004, 11397, 11790, 12180, 13755, 14148, 14616, 15196, 15660, 15720, 16506, 17685, 18270, 18340, 18995, 21924, 22008, 22794, 23580, 24360, 24759, 26593, 27405, 27510, 28296, 30392, 31320, 33012, 34191, 35370, 36540, 36680, 37990, 41265, 43848, 45588, 47160, 49518, 53186, 54810, 55020, 56985, 66024, 68382, 70740, 73080, 75980, 79779, 82530, 91176, 99036, 102573, 106372, 109620, 110040, 113970, 123795, 132965, 136764, 141480, 151960, 159558, 165060, 170955, 198072, 205146, 212744, 219240, 227940, 239337, 247590, 265930, 273528, 319116, 330120, 341910, 398895, 410292, 455880, 478674, 495180, 512865, 531860, 638232, 683820, 718011, 797790, 820584, 957348, 990360, 1025730, 1063720, 1196685, 1367640, 1436022, 1595580, 1914696, 2051460, 2393370, 2872044, 3191160, 3590055, 4102920, 4786740, 5744088, 7180110, 9573480, 14360220, 28720440]

約数ペア:

[(1, 28720440), (2, 14360220), (3, 9573480), (4, 7180110), (5, 5744088), (6, 4786740), (7, 4102920), (8, 3590055), (9, 3191160), (10, 2872044), (12, 2393370), (14, 2051460), (15, 1914696), (18, 1595580), (20, 1436022), (21, 1367640), (24, 1196685), (27, 1063720), (28, 1025730), (29, 990360), (30, 957348), (35, 820584), (36, 797790), (40, 718011), (42, 683820), (45, 638232), (54, 531860), (56, 512865), (58, 495180), (60, 478674), (63, 455880), (70, 410292), (72, 398895), (84, 341910), (87, 330120), (90, 319116), (105, 273528), (108, 265930), (116, 247590), (120, 239337), (126, 227940), (131, 219240), (135, 212744), (140, 205146), (145, 198072), (168, 170955), (174, 165060), (180, 159558), (189, 151960), (203, 141480), (210, 136764), (216, 132965), (232, 123795), (252, 113970), (261, 110040), (262, 109620), (270, 106372), (280, 102573), (290, 99036), (315, 91176), (348, 82530), (360, 79779), (378, 75980), (393, 73080), (406, 70740), (420, 68382), (435, 66024), (504, 56985), (522, 55020), (524, 54810), (540, 53186), (580, 49518), (609, 47160), (630, 45588), (655, 43848), (696, 41265), (756, 37990), (783, 36680), (786, 36540), (812, 35370), (840, 34191), (870, 33012), (917, 31320), (945, 30392), (1015, 28296), (1044, 27510), (1048, 27405), (1080, 26593), (1160, 24759), (1179, 24360), (1218, 23580), (1260, 22794), (1305, 22008), (1310, 21924), (1512, 18995), (1566, 18340), (1572, 18270), (1624, 17685), (1740, 16506), (1827, 15720), (1834, 15660), (1890, 15196), (1965, 14616), (2030, 14148), (2088, 13755), (2358, 12180), (2436, 11790), (2520, 11397), (2610, 11004), (2620, 10962), (2751, 10440), (3045, 9432), (3132, 9170), (3144, 9135), (3480, 8253), (3537, 8120), (3654, 7860), (3668, 7830), (3780, 7598), (3799, 7560), (3915, 7336), (3930, 7308), (4060, 7074), (4585, 6264), (4716, 6090), (4872, 5895), (5220, 5502), (5240, 5481)]