28309120

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:186

約数の個数: 128

約数和(自身を含む): 79315200

約数和(自身を除く): 51006080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 89, 112, 128, 140, 142, 160, 178, 224, 280, 284, 320, 355, 356, 445, 448, 497, 560, 568, 623, 640, 710, 712, 890, 896, 994, 1120, 1136, 1246, 1420, 1424, 1780, 1988, 2240, 2272, 2485, 2492, 2840, 2848, 3115, 3560, 3976, 4480, 4544, 4970, 4984, 5680, 5696, 6230, 6319, 7120, 7952, 9088, 9940, 9968, 11360, 11392, 12460, 12638, 14240, 15904, 19880, 19936, 22720, 24920, 25276, 28480, 31595, 31808, 39760, 39872, 44233, 45440, 49840, 50552, 56960, 63190, 63616, 79520, 79744, 88466, 99680, 101104, 126380, 159040, 176932, 199360, 202208, 221165, 252760, 318080, 353864, 398720, 404416, 442330, 505520, 707728, 808832, 884660, 1011040, 1415456, 1769320, 2022080, 2830912, 3538640, 4044160, 5661824, 7077280, 14154560, 28309120]

約数ペア:

[(1, 28309120), (2, 14154560), (4, 7077280), (5, 5661824), (7, 4044160), (8, 3538640), (10, 2830912), (14, 2022080), (16, 1769320), (20, 1415456), (28, 1011040), (32, 884660), (35, 808832), (40, 707728), (56, 505520), (64, 442330), (70, 404416), (71, 398720), (80, 353864), (89, 318080), (112, 252760), (128, 221165), (140, 202208), (142, 199360), (160, 176932), (178, 159040), (224, 126380), (280, 101104), (284, 99680), (320, 88466), (355, 79744), (356, 79520), (445, 63616), (448, 63190), (497, 56960), (560, 50552), (568, 49840), (623, 45440), (640, 44233), (710, 39872), (712, 39760), (890, 31808), (896, 31595), (994, 28480), (1120, 25276), (1136, 24920), (1246, 22720), (1420, 19936), (1424, 19880), (1780, 15904), (1988, 14240), (2240, 12638), (2272, 12460), (2485, 11392), (2492, 11360), (2840, 9968), (2848, 9940), (3115, 9088), (3560, 7952), (3976, 7120), (4480, 6319), (4544, 6230), (4970, 5696), (4984, 5680)]