400824880

素因数分解:

$2^4\times 5^1\times {\mathrm{1297}}^1\times {\mathrm{3863}}^1$

素因数の和:5173

約数の個数: 40

約数和(自身を含む): 932877792

約数和(自身を除く): 532052912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1297, 2594, 3863, 5188, 6485, 7726, 10376, 12970, 15452, 19315, 20752, 25940, 30904, 38630, 51880, 61808, 77260, 103760, 154520, 309040, 5010311, 10020622, 20041244, 25051555, 40082488, 50103110, 80164976, 100206220, 200412440, 400824880]

約数ペア:

[(1, 400824880), (2, 200412440), (4, 100206220), (5, 80164976), (8, 50103110), (10, 40082488), (16, 25051555), (20, 20041244), (40, 10020622), (80, 5010311), (1297, 309040), (2594, 154520), (3863, 103760), (5188, 77260), (6485, 61808), (7726, 51880), (10376, 38630), (12970, 30904), (15452, 25940), (19315, 20752)]