19845820

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7243}}^1$

素因数の和:7389

約数の個数: 24

約数和(自身を含む): 41986224

約数和(自身を除く): 22140404

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7243, 14486, 28972, 36215, 72430, 144860, 992291, 1984582, 3969164, 4961455, 9922910, 19845820]

約数ペア:

[(1, 19845820), (2, 9922910), (4, 4961455), (5, 3969164), (10, 1984582), (20, 992291), (137, 144860), (274, 72430), (548, 36215), (685, 28972), (1370, 14486), (2740, 7243)]