21007882

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{78977}}^1$

素因数の和:79005

約数の個数: 16

約数和(自身を含む): 37909440

約数和(自身を除く): 16901558

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 78977, 157954, 552839, 1105678, 1500563, 3001126, 10503941, 21007882]

約数ペア:

[(1, 21007882), (2, 10503941), (7, 3001126), (14, 1500563), (19, 1105678), (38, 552839), (133, 157954), (266, 78977)]