256883180

素因数分解:

$2^2\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{9949}}^1$

素因数の和:11249

約数の個数: 24

約数和(自身を含む): 539926800

約数和(自身を除く): 283043620

約数列:

[1, 2, 4, 5, 10, 20, 1291, 2582, 5164, 6455, 9949, 12910, 19898, 25820, 39796, 49745, 99490, 198980, 12844159, 25688318, 51376636, 64220795, 128441590, 256883180]

約数ペア:

[(1, 256883180), (2, 128441590), (4, 64220795), (5, 51376636), (10, 25688318), (20, 12844159), (1291, 198980), (2582, 99490), (5164, 49745), (6455, 39796), (9949, 25820), (12910, 19898)]