20665882

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{8117}}^1$

素因数の和:8205

約数の個数: 16

約数和(自身を含む): 33121440

約数和(自身を除く): 12455558

約数列:

[1, 2, 19, 38, 67, 134, 1273, 2546, 8117, 16234, 154223, 308446, 543839, 1087678, 10332941, 20665882]

約数ペア:

[(1, 20665882), (2, 10332941), (19, 1087678), (38, 543839), (67, 308446), (134, 154223), (1273, 16234), (2546, 8117)]