20951816

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{36887}}^1$

素因数の和:36964

約数の個数: 16

約数和(自身を含む): 39839040

約数和(自身を除く): 18887224

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 36887, 73774, 147548, 295096, 2618977, 5237954, 10475908, 20951816]

約数ペア:

[(1, 20951816), (2, 10475908), (4, 5237954), (8, 2618977), (71, 295096), (142, 147548), (284, 73774), (568, 36887)]