28712880

素因数分解:

$2^4\times 3^5\times 5^1\times 7^1\times {\mathrm{211}}^1$

素因数の和:246

約数の個数: 240

約数和(自身を含む): 114825984

約数和(自身を除く): 86113104

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, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 162, 168, 180, 189, 210, 211, 216, 240, 243, 252, 270, 280, 315, 324, 336, 360, 378, 405, 420, 422, 432, 486, 504, 540, 560, 567, 630, 633, 648, 720, 756, 810, 840, 844, 945, 972, 1008, 1055, 1080, 1134, 1215, 1260, 1266, 1296, 1477, 1512, 1620, 1680, 1688, 1701, 1890, 1899, 1944, 2110, 2160, 2268, 2430, 2520, 2532, 2835, 2954, 3024, 3165, 3240, 3376, 3402, 3780, 3798, 3888, 4220, 4431, 4536, 4860, 5040, 5064, 5670, 5697, 5908, 6330, 6480, 6804, 7385, 7560, 7596, 8440, 8505, 8862, 9072, 9495, 9720, 10128, 11340, 11394, 11816, 12660, 13293, 13608, 14770, 15120, 15192, 16880, 17010, 17091, 17724, 18990, 19440, 22155, 22680, 22788, 23632, 25320, 26586, 27216, 28485, 29540, 30384, 34020, 34182, 35448, 37980, 39879, 44310, 45360, 45576, 50640, 51273, 53172, 56970, 59080, 66465, 68040, 68364, 70896, 75960, 79758, 85455, 88620, 91152, 102546, 106344, 113940, 118160, 119637, 132930, 136080, 136728, 151920, 159516, 170910, 177240, 199395, 205092, 212688, 227880, 239274, 256365, 265860, 273456, 319032, 341820, 354480, 358911, 398790, 410184, 455760, 478548, 512730, 531720, 598185, 638064, 683640, 717822, 797580, 820368, 957096, 1025460, 1063440, 1196370, 1367280, 1435644, 1595160, 1794555, 1914192, 2050920, 2392740, 2871288, 3190320, 3589110, 4101840, 4785480, 5742576, 7178220, 9570960, 14356440, 28712880]

約数ペア:

[(1, 28712880), (2, 14356440), (3, 9570960), (4, 7178220), (5, 5742576), (6, 4785480), (7, 4101840), (8, 3589110), (9, 3190320), (10, 2871288), (12, 2392740), (14, 2050920), (15, 1914192), (16, 1794555), (18, 1595160), (20, 1435644), (21, 1367280), (24, 1196370), (27, 1063440), (28, 1025460), (30, 957096), (35, 820368), (36, 797580), (40, 717822), (42, 683640), (45, 638064), (48, 598185), (54, 531720), (56, 512730), (60, 478548), (63, 455760), (70, 410184), (72, 398790), (80, 358911), (81, 354480), (84, 341820), (90, 319032), (105, 273456), (108, 265860), (112, 256365), (120, 239274), (126, 227880), (135, 212688), (140, 205092), (144, 199395), (162, 177240), (168, 170910), (180, 159516), (189, 151920), (210, 136728), (211, 136080), (216, 132930), (240, 119637), (243, 118160), (252, 113940), (270, 106344), (280, 102546), (315, 91152), (324, 88620), (336, 85455), (360, 79758), (378, 75960), (405, 70896), (420, 68364), (422, 68040), (432, 66465), (486, 59080), (504, 56970), (540, 53172), (560, 51273), (567, 50640), (630, 45576), (633, 45360), (648, 44310), (720, 39879), (756, 37980), (810, 35448), (840, 34182), (844, 34020), (945, 30384), (972, 29540), (1008, 28485), (1055, 27216), (1080, 26586), (1134, 25320), (1215, 23632), (1260, 22788), (1266, 22680), (1296, 22155), (1477, 19440), (1512, 18990), (1620, 17724), (1680, 17091), (1688, 17010), (1701, 16880), (1890, 15192), (1899, 15120), (1944, 14770), (2110, 13608), (2160, 13293), (2268, 12660), (2430, 11816), (2520, 11394), (2532, 11340), (2835, 10128), (2954, 9720), (3024, 9495), (3165, 9072), (3240, 8862), (3376, 8505), (3402, 8440), (3780, 7596), (3798, 7560), (3888, 7385), (4220, 6804), (4431, 6480), (4536, 6330), (4860, 5908), (5040, 5697), (5064, 5670)]