16780820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1789}}^1$

素因数の和:1872

約数の個数: 48

約数和(自身を含む): 40897920

約数和(自身を除く): 24117100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1789, 1876, 2345, 3578, 4690, 7156, 8945, 9380, 12523, 17890, 25046, 35780, 50092, 62615, 119863, 125230, 239726, 250460, 479452, 599315, 839041, 1198630, 1678082, 2397260, 3356164, 4195205, 8390410, 16780820]

約数ペア:

[(1, 16780820), (2, 8390410), (4, 4195205), (5, 3356164), (7, 2397260), (10, 1678082), (14, 1198630), (20, 839041), (28, 599315), (35, 479452), (67, 250460), (70, 239726), (134, 125230), (140, 119863), (268, 62615), (335, 50092), (469, 35780), (670, 25046), (938, 17890), (1340, 12523), (1789, 9380), (1876, 8945), (2345, 7156), (3578, 4690)]