12990236

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{9871}}^1$

素因数の和:9929

約数の個数: 24

約数和(自身を含む): 26535936

約数和(自身を除く): 13545700

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 9871, 19742, 39484, 69097, 138194, 276388, 463937, 927874, 1855748, 3247559, 6495118, 12990236]

約数ペア:

[(1, 12990236), (2, 6495118), (4, 3247559), (7, 1855748), (14, 927874), (28, 463937), (47, 276388), (94, 138194), (188, 69097), (329, 39484), (658, 19742), (1316, 9871)]