20958260

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7649}}^1$

素因数の和:7795

約数の個数: 24

約数和(自身を含む): 44339400

約数和(自身を除く): 23381140

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7649, 15298, 30596, 38245, 76490, 152980, 1047913, 2095826, 4191652, 5239565, 10479130, 20958260]

約数ペア:

[(1, 20958260), (2, 10479130), (4, 5239565), (5, 4191652), (10, 2095826), (20, 1047913), (137, 152980), (274, 76490), (548, 38245), (685, 30596), (1370, 15298), (2740, 7649)]