21653296

素因数分解:

$2^4\times 7^2\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:482

約数の個数: 60

約数和(自身を含む): 49617360

約数和(自身を除く): 27964064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 71, 98, 112, 142, 196, 284, 389, 392, 497, 568, 778, 784, 994, 1136, 1556, 1988, 2723, 3112, 3479, 3976, 5446, 6224, 6958, 7952, 10892, 13916, 19061, 21784, 27619, 27832, 38122, 43568, 55238, 55664, 76244, 110476, 152488, 193333, 220952, 304976, 386666, 441904, 773332, 1353331, 1546664, 2706662, 3093328, 5413324, 10826648, 21653296]

約数ペア:

[(1, 21653296), (2, 10826648), (4, 5413324), (7, 3093328), (8, 2706662), (14, 1546664), (16, 1353331), (28, 773332), (49, 441904), (56, 386666), (71, 304976), (98, 220952), (112, 193333), (142, 152488), (196, 110476), (284, 76244), (389, 55664), (392, 55238), (497, 43568), (568, 38122), (778, 27832), (784, 27619), (994, 21784), (1136, 19061), (1556, 13916), (1988, 10892), (2723, 7952), (3112, 6958), (3479, 6224), (3976, 5446)]