89540780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{639577}}^1$

素因数の和:639593

約数の個数: 24

約数和(自身を含む): 214898208

約数和(自身を除く): 125357428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 639577, 1279154, 2558308, 3197885, 4477039, 6395770, 8954078, 12791540, 17908156, 22385195, 44770390, 89540780]

約数ペア:

[(1, 89540780), (2, 44770390), (4, 22385195), (5, 17908156), (7, 12791540), (10, 8954078), (14, 6395770), (20, 4477039), (28, 3197885), (35, 2558308), (70, 1279154), (140, 639577)]