20817865

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{859}}^1$

素因数の和:1032

約数の個数: 16

約数和(自身を含む): 25882560

約数和(自身を除く): 5064695

約数列:

[1, 5, 37, 131, 185, 655, 859, 4295, 4847, 24235, 31783, 112529, 158915, 562645, 4163573, 20817865]

約数ペア:

[(1, 20817865), (5, 4163573), (37, 562645), (131, 158915), (185, 112529), (655, 31783), (859, 24235), (4295, 4847)]