81891943

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1\times {\mathrm{719}}^1$

素因数の和:1086

約数の個数: 16

約数和(自身を含む): 95800320

約数和(自身を除く): 13908377

約数列:

[1, 7, 53, 307, 371, 719, 2149, 5033, 16271, 38107, 113897, 220733, 266749, 1545131, 11698849, 81891943]

約数ペア:

[(1, 81891943), (7, 11698849), (53, 1545131), (307, 266749), (371, 220733), (719, 113897), (2149, 38107), (5033, 16271)]