81509978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{887}}^1\times {\mathrm{4177}}^1$

素因数の和:5077

約数の個数: 16

約数和(自身を含む): 133562304

約数和(自身を除く): 52052326

約数列:

[1, 2, 11, 22, 887, 1774, 4177, 8354, 9757, 19514, 45947, 91894, 3704999, 7409998, 40754989, 81509978]

約数ペア:

[(1, 81509978), (2, 40754989), (11, 7409998), (22, 3704999), (887, 91894), (1774, 45947), (4177, 19514), (8354, 9757)]