20109904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{797}}^1$

素因数の和:907

約数の個数: 40

約数和(自身を含む): 41559840

約数和(自身を除く): 21449936

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 83, 152, 166, 304, 332, 664, 797, 1328, 1577, 1594, 3154, 3188, 6308, 6376, 12616, 12752, 15143, 25232, 30286, 60572, 66151, 121144, 132302, 242288, 264604, 529208, 1058416, 1256869, 2513738, 5027476, 10054952, 20109904]

約数ペア:

[(1, 20109904), (2, 10054952), (4, 5027476), (8, 2513738), (16, 1256869), (19, 1058416), (38, 529208), (76, 264604), (83, 242288), (152, 132302), (166, 121144), (304, 66151), (332, 60572), (664, 30286), (797, 25232), (1328, 15143), (1577, 12752), (1594, 12616), (3154, 6376), (3188, 6308)]