28678745080

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{821}}^1\times {\mathrm{883}}^1$

素因数の和:1781

約数の個数: 128

約数和(自身を含む): 69060625920

約数和(自身を除く): 40381880840

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 230, 344, 430, 460, 821, 860, 883, 920, 989, 1642, 1720, 1766, 1978, 3284, 3532, 3956, 4105, 4415, 4945, 6568, 7064, 7912, 8210, 8830, 9890, 16420, 17660, 18883, 19780, 20309, 32840, 35303, 35320, 37766, 37969, 39560, 40618, 70606, 75532, 75938, 81236, 94415, 101545, 141212, 151064, 151876, 162472, 176515, 188830, 189845, 203090, 282424, 303752, 353030, 377660, 379690, 406180, 706060, 724943, 755320, 759380, 811969, 812360, 873287, 1412120, 1449886, 1518760, 1623938, 1746574, 2899772, 3247876, 3493148, 3624715, 4059845, 4366435, 5799544, 6495752, 6986296, 7249430, 8119690, 8732870, 14498860, 16239380, 16673689, 17465740, 28997720, 31172549, 32478760, 33347378, 34931480, 62345098, 66694756, 83368445, 124690196, 133389512, 155862745, 166736890, 249380392, 311725490, 333473780, 623450980, 666947560, 716968627, 1246901960, 1433937254, 2867874508, 3584843135, 5735749016, 7169686270, 14339372540, 28678745080]

約数ペア:

[(1, 28678745080), (2, 14339372540), (4, 7169686270), (5, 5735749016), (8, 3584843135), (10, 2867874508), (20, 1433937254), (23, 1246901960), (40, 716968627), (43, 666947560), (46, 623450980), (86, 333473780), (92, 311725490), (115, 249380392), (172, 166736890), (184, 155862745), (215, 133389512), (230, 124690196), (344, 83368445), (430, 66694756), (460, 62345098), (821, 34931480), (860, 33347378), (883, 32478760), (920, 31172549), (989, 28997720), (1642, 17465740), (1720, 16673689), (1766, 16239380), (1978, 14498860), (3284, 8732870), (3532, 8119690), (3956, 7249430), (4105, 6986296), (4415, 6495752), (4945, 5799544), (6568, 4366435), (7064, 4059845), (7912, 3624715), (8210, 3493148), (8830, 3247876), (9890, 2899772), (16420, 1746574), (17660, 1623938), (18883, 1518760), (19780, 1449886), (20309, 1412120), (32840, 873287), (35303, 812360), (35320, 811969), (37766, 759380), (37969, 755320), (39560, 724943), (40618, 706060), (70606, 406180), (75532, 379690), (75938, 377660), (81236, 353030), (94415, 303752), (101545, 282424), (141212, 203090), (151064, 189845), (151876, 188830), (162472, 176515)]