19782

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{157}}^1$

素因数の和:172

約数の個数: 24

約数和(自身を含む): 49296

約数和(自身を除く): 29514

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 157, 314, 471, 942, 1099, 1413, 2198, 2826, 3297, 6594, 9891, 19782]

約数ペア:

[(1, 19782), (2, 9891), (3, 6594), (6, 3297), (7, 2826), (9, 2198), (14, 1413), (18, 1099), (21, 942), (42, 471), (63, 314), (126, 157)]