81287912

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{247829}}^1$

素因数の和:247876

約数の個数: 16

約数和(自身を含む): 156132900

約数和(自身を除く): 74844988

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 247829, 495658, 991316, 1982632, 10160989, 20321978, 40643956, 81287912]

約数ペア:

[(1, 81287912), (2, 40643956), (4, 20321978), (8, 10160989), (41, 1982632), (82, 991316), (164, 495658), (328, 247829)]