81138505

素因数分解:

$5^1\times 7^1\times {\mathrm{739}}^1\times {\mathrm{3137}}^1$

素因数の和:3888

約数の個数: 16

約数和(自身を含む): 111461760

約数和(自身を除く): 30323255

約数列:

[1, 5, 7, 35, 739, 3137, 3695, 5173, 15685, 21959, 25865, 109795, 2318243, 11591215, 16227701, 81138505]

約数ペア:

[(1, 81138505), (5, 16227701), (7, 11591215), (35, 2318243), (739, 109795), (3137, 25865), (3695, 21959), (5173, 15685)]