21283235

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{337}}^1\times {\mathrm{743}}^1$

素因数の和:1102

約数の個数: 16

約数和(自身を含む): 27158976

約数和(自身を除く): 5875741

約数列:

[1, 5, 17, 85, 337, 743, 1685, 3715, 5729, 12631, 28645, 63155, 250391, 1251955, 4256647, 21283235]

約数ペア:

[(1, 21283235), (5, 4256647), (17, 1251955), (85, 250391), (337, 63155), (743, 28645), (1685, 12631), (3715, 5729)]