28678860

素因数分解:

$2^2\times 3^6\times 5^1\times 7^1\times {\mathrm{281}}^1$

素因数の和:315

約数の個数: 168

約数和(自身を含む): 103563936

約数和(自身を除く): 74885076

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 243, 252, 270, 281, 315, 324, 378, 405, 420, 486, 540, 562, 567, 630, 729, 756, 810, 843, 945, 972, 1124, 1134, 1215, 1260, 1405, 1458, 1620, 1686, 1701, 1890, 1967, 2268, 2430, 2529, 2810, 2835, 2916, 3372, 3402, 3645, 3780, 3934, 4215, 4860, 5058, 5103, 5620, 5670, 5901, 6804, 7290, 7587, 7868, 8430, 8505, 9835, 10116, 10206, 11340, 11802, 12645, 14580, 15174, 16860, 17010, 17703, 19670, 20412, 22761, 23604, 25290, 25515, 29505, 30348, 34020, 35406, 37935, 39340, 45522, 50580, 51030, 53109, 59010, 68283, 70812, 75870, 88515, 91044, 102060, 106218, 113805, 118020, 136566, 151740, 159327, 177030, 204849, 212436, 227610, 265545, 273132, 318654, 341415, 354060, 409698, 455220, 477981, 531090, 637308, 682830, 796635, 819396, 955962, 1024245, 1062180, 1365660, 1433943, 1593270, 1911924, 2048490, 2389905, 2867886, 3186540, 4096980, 4779810, 5735772, 7169715, 9559620, 14339430, 28678860]

約数ペア:

[(1, 28678860), (2, 14339430), (3, 9559620), (4, 7169715), (5, 5735772), (6, 4779810), (7, 4096980), (9, 3186540), (10, 2867886), (12, 2389905), (14, 2048490), (15, 1911924), (18, 1593270), (20, 1433943), (21, 1365660), (27, 1062180), (28, 1024245), (30, 955962), (35, 819396), (36, 796635), (42, 682830), (45, 637308), (54, 531090), (60, 477981), (63, 455220), (70, 409698), (81, 354060), (84, 341415), (90, 318654), (105, 273132), (108, 265545), (126, 227610), (135, 212436), (140, 204849), (162, 177030), (180, 159327), (189, 151740), (210, 136566), (243, 118020), (252, 113805), (270, 106218), (281, 102060), (315, 91044), (324, 88515), (378, 75870), (405, 70812), (420, 68283), (486, 59010), (540, 53109), (562, 51030), (567, 50580), (630, 45522), (729, 39340), (756, 37935), (810, 35406), (843, 34020), (945, 30348), (972, 29505), (1124, 25515), (1134, 25290), (1215, 23604), (1260, 22761), (1405, 20412), (1458, 19670), (1620, 17703), (1686, 17010), (1701, 16860), (1890, 15174), (1967, 14580), (2268, 12645), (2430, 11802), (2529, 11340), (2810, 10206), (2835, 10116), (2916, 9835), (3372, 8505), (3402, 8430), (3645, 7868), (3780, 7587), (3934, 7290), (4215, 6804), (4860, 5901), (5058, 5670), (5103, 5620)]