28657440

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{2843}}^1$

素因数の和:2871

約数の個数: 144

約数和(自身を含む): 111803328

約数和(自身を除く): 83145888

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 2843, 3360, 5040, 5686, 8529, 10080, 11372, 14215, 17058, 19901, 22744, 25587, 28430, 34116, 39802, 42645, 45488, 51174, 56860, 59703, 68232, 79604, 85290, 90976, 99505, 102348, 113720, 119406, 127935, 136464, 159208, 170580, 179109, 199010, 204696, 227440, 238812, 255870, 272928, 298515, 318416, 341160, 358218, 398020, 409392, 454880, 477624, 511740, 597030, 636832, 682320, 716436, 796040, 818784, 895545, 955248, 1023480, 1194060, 1364640, 1432872, 1592080, 1791090, 1910496, 2046960, 2388120, 2865744, 3184160, 3582180, 4093920, 4776240, 5731488, 7164360, 9552480, 14328720, 28657440]

約数ペア:

[(1, 28657440), (2, 14328720), (3, 9552480), (4, 7164360), (5, 5731488), (6, 4776240), (7, 4093920), (8, 3582180), (9, 3184160), (10, 2865744), (12, 2388120), (14, 2046960), (15, 1910496), (16, 1791090), (18, 1592080), (20, 1432872), (21, 1364640), (24, 1194060), (28, 1023480), (30, 955248), (32, 895545), (35, 818784), (36, 796040), (40, 716436), (42, 682320), (45, 636832), (48, 597030), (56, 511740), (60, 477624), (63, 454880), (70, 409392), (72, 398020), (80, 358218), (84, 341160), (90, 318416), (96, 298515), (105, 272928), (112, 255870), (120, 238812), (126, 227440), (140, 204696), (144, 199010), (160, 179109), (168, 170580), (180, 159208), (210, 136464), (224, 127935), (240, 119406), (252, 113720), (280, 102348), (288, 99505), (315, 90976), (336, 85290), (360, 79604), (420, 68232), (480, 59703), (504, 56860), (560, 51174), (630, 45488), (672, 42645), (720, 39802), (840, 34116), (1008, 28430), (1120, 25587), (1260, 22744), (1440, 19901), (1680, 17058), (2016, 14215), (2520, 11372), (2843, 10080), (3360, 8529), (5040, 5686)]